50278 + Interview Questions in Physics Page 300 InterviewSolution

14951.	A convergent lens of power 16 D is used as a simple microscope the magnification produced by the lens when the final image is formed at least distance of dinstinct vision is
Answer» A convergent lens of power 16 D is used as a simple microscope the magnification produced by the lens when the final image is formed at least distance of dinstinct vision is

Discussion

14952.	Two equal forces(F) have their resultant equal to either of the forces. Then, at what angle the forces are inclined?
Answer» Two equal forces $(F)$ have their resultant equal to either of the forces. Then, at what angle the forces are inclined?

Discussion

14953.	Under what condition will the displacement and distance of a moving object has the same magnitude ?
Answer» Under what condition will the displacement and distance of a moving object has the same magnitude ?

Discussion

14954.	The angular velocity of earth about its axis of rotation is
Answer» The angular velocity of earth about its axis of rotation is

Discussion

14955.	An object of specific gravity σ is hung from a massless string .The tension in string is T.The object is immersed in water so that one half of its volume is submerged .The new tension in the string is .
Answer» An object of specific gravity σ is hung from a massless string .The tension in string is T.The object is immersed in water so that one half of its volume is submerged .The new tension in the string is .

Discussion

14956.	potential function under conservative is given as U=2xy-yz^2. Find Force at xy-yz^2.SOLVE IN DETAIL
Answer» potential function under conservative is given as U=2xy-yz^2. Find Force at xy-yz^2. SOLVE IN DETAIL

Discussion

14957.	State different ways to induce current in a coil.
Answer» State different ways to induce current in a coil.

Discussion

14958.	What is the emitter current if IB=20 μA and β=100 ?
Answer» What is the emitter current if $I_{B} = 20 μ A$ and $β = 100$ ?

Discussion

14959.	A 1500 kVA, 6.6/1.1 kV, 3-ϕ delta-star connection transformer has the following test data,when low voltage side is short circuited: 300 V, 30 kW, 131.2 Athe per phase reactance referred to delta side is ________Ω.3.55
Answer» A 1500 kVA, 6.6/1.1 kV, 3- $ϕ$ delta-star connection transformer has the following test data, when low voltage side is short circuited: 300 V, 30 kW, 131.2 A the per phase reactance referred to delta side is ________ $Ω$ . 3.55

Discussion

14960.	A steel wire of original length 1 m and cross4 mm^2 is clamped at the two ends so that it lies horizontally and without tension. If a load of 2.16 kg issuspended from the middle point of wire what would be its vertical depression?, Y of the steel-2.0\ast10^{11} N m^{-2}. Take g-10 ms^-
Answer» A steel wire of original length 1 m and cross4 mm^2 is clamped at the two ends so that it lies horizontally and without tension. If a load of 2.16 kg issuspended from the middle point of wire what would be its vertical depression?, Y of the steel-2.0\ast10^{11} N m^{-2}. Take g-10 ms^-

Discussion

14961.	what are angular and linear momentum
Answer» what are angular and linear momentum

Discussion

14962.	Statement I A cloth covers a table. Some dishes are kept on it. The cloth can be pulled out without dislodging the dishes from the table.Statement II For every action there is an equal and opposite reaction.
Answer» Statement I A cloth covers a table. Some dishes are kept on it. The cloth can be pulled out without dislodging the dishes from the table. Statement II For every action there is an equal and opposite reaction.

Discussion

14963.	{ A stone of mass }1 kg is tied with a string and it }}{ is whirled in a vertical circle of radius }1m . If }}{ tension at the highest point is }14N , then velocity }} at lowest point will be }{ (1) }3m/s}{ (3) }6m/s
Answer» { A stone of mass }1 kg is tied with a string and it }}{ is whirled in a vertical circle of radius }1m . If }}{ tension at the highest point is }14N , then velocity }} at lowest point will be }{ (1) }3m/s}{ (3) }6m/s

Discussion

14964.	A boy on a cliff 49m high, drops a stone, one second later, he throws another stone vertically downwards. The two stones hit the ground at the same time. What was the velocity with which the second stone was thrown?
Answer» A boy on a cliff 49m high, drops a stone, one second later, he throws another stone vertically downwards. The two stones hit the ground at the same time. What was the velocity with which the second stone was thrown?

Discussion

14965.	ntA non conducting sheet of large surface area and thickness d contains uniform charge distribution of density . Find the electric field at a point P inside the plate , at a distance x from the central plane. Draw a qualitative graph of electric field (E) against x for 0
Answer» ntA non conducting sheet of large surface area and thickness d contains uniform charge distribution of density . Find the electric field at a point P inside the plate , at a distance x from the central plane. Draw a qualitative graph of electric field (E) against x for 0

Discussion

14966.	What is the derivation of relation between kinetic energy and linear momentum?
Answer» What is the derivation of relation between kinetic energy and linear momentum?

Discussion

14967.	17.Positive and negative point charges of equal magnitude are kept at (0,0,a/2)and(0,0,-a/2)respectively. The work done by the electric field when another positive point charge is moved from (–a,0,0) to (0,a,0) is
Answer» 17.Positive and negative point charges of equal magnitude are kept at (0,0,a/2)and(0,0,-a/2)respectively. The work done by the electric field when another positive point charge is moved from (–a,0,0) to (0,a,0) is

Discussion

14968.	You are given that mass of 73Li=7.0160u,mass of 42He=4.0026 u and mass of 11H=1.0079 u. When 20 g of 73Li is converted into 42He by proton capture, the energy liberated, (in k Wh) is :[Mass of Nucleon =1 GeV/c2]
Answer» You are given that mass of $_{3}^{7} L i = 7.0160 u$ , ${mass of}_{2}^{4} H e = 4.0026 u$ ${and mass of}_{1}^{1} H = 1.0079 u .$ When $20 g$ of $_{3}^{7} L i$ is converted into $_{2}^{4} H e$ by proton capture, the energy liberated, (in $k Wh$ ) is : $[Mass of Nucleon = 1 {GeV/c}^{2}]$

Discussion

14969.	If a body has a charge of magnitude 8 × 10–19 coulomb. What is the correct combination of protons and electrons on it?
Answer» If a body has a charge of magnitude 8 × 10^–19 coulomb. What is the correct combination of protons and electrons on it?

14969.

If a body has a charge of magnitude 8 × 10–19 coulomb. What is the correct combination of protons and electrons on it?

Answer»

If a body has a charge of magnitude 8 × 10^–19 coulomb. What is the correct combination of protons and electrons on it?

Discussion

14970.	A current of 4 A flows in a coil when connected to a 12 V DC source. If the same coil is connected to a 12 V, 50 rad/s AC source, a RMS current of 2.4 A flows in the circuit. Find the power developed in the circuit if a 2500 μF capacitor is connected in series with the coil.
Answer» A current of $4 A$ flows in a coil when connected to a $12 V DC$ source. If the same coil is connected to a $12 V, 50 rad/s$ $AC$ source, a $RMS$ current of $2.4 A$ flows in the circuit. Find the power developed in the circuit if a $2500 μ F$ capacitor is connected in series with the coil.

Discussion

14971.	Three glass cylinders of equal height H=30 cm and same refractive index n=1.5 are placed on a horizontal surface as shown in figure. Cylinder I has a flat top, cylinder II has a convex top and cylinder III has a concave top. The radii of curvature of the two curved tops are same (R = 3 m ). If H1,H2 and H3 are the apparent depths of a point X on the bottom of the three cylinders respectively, the correct statement(s) is/are
Answer» Three glass cylinders of equal height $H = 30 c m$ and same refractive index $n = 1.5$ are placed on a horizontal surface as shown in figure. Cylinder I has a flat top, cylinder II has a convex top and cylinder III has a concave top. The radii of curvature of the two curved tops are same (R = 3 m ). If $H_{1}, H_{2}$ and $H_{3}$ are the apparent depths of a point X on the bottom of the three cylinders respectively, the correct statement(s) is/are

Discussion

14972.	Helium gas goes through a cycle ABCDA (consisting of two isochoric and two isobaric lines) as shown in figure. Efficiency of this cycle is nearly: [Assume the gas to be an ideal gas]
Answer» Helium gas goes through a cycle $ABCDA$ (consisting of two isochoric and two isobaric lines) as shown in figure. Efficiency of this cycle is nearly: [Assume the gas to be an ideal gas]

Discussion

14973.	Four particles each of mass m are arranged at the corners of a massless square of side a. The MI of system about an axis which is perpendicularto the plane of square and passes through one corner is
Answer» Four particles each of mass m are arranged at the corners of a massless square of side a. The MI of system about an axis which is perpendicularto the plane of square and passes through one corner is

Discussion

14974.	A boy walks to his school at a distance of 6 km with constant speed of 2.5 km/hour and walks back with a constant speed of 4 km/hr. His average speed for round trip expressed in km/hour, is
Answer» A boy walks to his school at a distance of 6 km with constant speed of 2.5 km/hour and walks back with a constant speed of 4 km/hr. His average speed for round trip expressed in km/hour, is

Discussion

14975.	A heavy particle is projected with a velocity at an angle with the horizontal into a uniform gravitational field. The slope of the trajectory of the particle varies not according to which of the following curves?
Answer» A heavy particle is projected with a velocity at an angle with the horizontal into a uniform gravitational field. The slope of the trajectory of the particle varies not according to which of the following curves?

Discussion

14976.	a parallel llate capacitor is filled by a dielectric whose relative permittivity varies with applied voltage V as e=2V. a similar capacitor without dielectric is charged to 136V . it is then connected to the uncharged capacitor with the dielectric. the final voltage on the capacitors is ?
Answer» a parallel llate capacitor is filled by a dielectric whose relative permittivity varies with applied voltage V as e=2V. a similar capacitor without dielectric is charged to 136V . it is then connected to the uncharged capacitor with the dielectric. the final voltage on the capacitors is ?

Discussion

14977.	If p and q are the perpendicular distances from the origin to the straight lines x secθ−y cosecθ=α and x cosθ+y sinθ=αcos 2θ then
Answer» If p and q are the perpendicular distances from the origin to the straight lines $x s e c θ - y c o s e c θ = α a n d x c o s θ + y s i n θ = α c o s 2 θ$ then

Discussion

14978.	12. Consider a planet moving around a star in an elliptical orbit of with time period T. The area of elliptical orbit is proportional to
Answer» 12. Consider a planet moving around a star in an elliptical orbit of with time period T. The area of elliptical orbit is proportional to

Discussion

14979.	17. A-The quantity L/R possesses dimension of time R-to reduce the rate of increase of current through a solenoid we should increase the time constant
Answer» 17. A-The quantity L/R possesses dimension of time R-to reduce the rate of increase of current through a solenoid we should increase the time constant

Discussion

14980.	A Particle is moving such that its position co-ordinates (x, y) are (2m, 3m) at time t=0,(6m, 7m) at time t=2 s and (13m, 14m) at time t=5 s.the average velocity vector from t=0 to t=5 s is
Answer» A Particle is moving such that its position co-ordinates (x, y) are (2m, 3m) at time t=0, (6m, 7m) at time t=2 s and (13m, 14m) at time t=5 s. the average velocity vector from t=0 to t=5 s is

Discussion

14981.	The magnetic field lines due to a bar magnet are correctly shown in [1 Mark]
Answer» The magnetic field lines due to a bar magnet are correctly shown in $[$ 1 Mark $]$

Discussion

14982.	The molar conductances of NaCl, HCl and CH3COONa at infinite dilution are 126.45, 426.16 and 91 ohm-1 cm2 mol-1 respectively. The molar conductance of CH3COOH at infinite dilution is
Answer» The molar conductances of NaCl, HCl and CH₃COONa at infinite dilution are 126.45, 426.16 and 91 ohm^-1 cm² mol^-1 respectively. The molar conductance of CH₃COOH at infinite dilution is

Discussion

14983.	There is a small hole in a hollow sphere. The water enters into it when it is taken to a depth of 40 cm under water. The surface tension of water is 0.07 N/m. The diameter of the hole is[Take g=10 m/s2]
Answer» There is a small hole in a hollow sphere. The water enters into it when it is taken to a depth of $40 cm$ under water. The surface tension of water is $0.07 N/m$ . The diameter of the hole is [Take $g = 10 {m/s}^{2}$ ]

Discussion

14984.	A juggler is throwing balls vertically up in air at regular time interval of0.5sec. If at the most six balls are in air, then minimum speed with which he throws the balls is (g = 10 m/s2)
Answer» A juggler is throwing balls vertically up in air at regular time interval of0.5sec. If at the most six balls are in air, then minimum speed with which he throws the balls is (g = 10 m/s2)

Discussion

14985.	The acceleration- time relationship for a vehicle subjected to non- uniform acceleration isdvdt=(α−βv0)e−βtWhere, v is the speed in m/s, t is the time in s, α and β are parameters, and v0 is the initial speed in m/s. If the accelerating behaviour of a vehicle, whose driver intends to overtake a slow moving vehicle ahead, is described as,dvdt=(α−βv)Consideringα=2m/s2,β=0.05s−1 anddvdt=1.3 m/s2 at t=3s, the distance (in m) travelled by the vehicle in 35 sec is900.96
Answer» The acceleration- time relationship for a vehicle subjected to non- uniform acceleration is $\frac{d v}{d t} = (α - β v_{0}) e^{- β t}$ Where, v is the speed in m/s, t is the time in s, $α$ and $β$ are parameters, and $v_{0}$ is the initial speed in m/s. If the accelerating behaviour of a vehicle, whose driver intends to overtake a slow moving vehicle ahead, is described as, $\frac{d v}{d t} = (α - β v)$ Considering $α = 2 m / s^{2}, β = 0.05 s^{- 1} and$ $\frac{d v}{d t} = 1.3 m / s^{2} a t t = 3 s$ , the distance (in m) travelled by the vehicle in 35 sec is 900.96

14985.

The acceleration- time relationship for a vehicle subjected to non- uniform acceleration isdvdt=(α−βv0)e−βtWhere, v is the speed in m/s, t is the time in s, α and β are parameters, and v0 is the initial speed in m/s. If the accelerating behaviour of a vehicle, whose driver intends to overtake a slow moving vehicle ahead, is described as,dvdt=(α−βv)Consideringα=2m/s2,β=0.05s−1 anddvdt=1.3 m/s2 at t=3s, the distance (in m) travelled by the vehicle in 35 sec is900.96

Answer»

The acceleration- time relationship for a vehicle subjected to non- uniform acceleration is

$\frac{d v}{d t} = (α - β v_{0}) e^{- β t}$

Where, v is the speed in m/s, t is the time in s, $α$ and $β$ are parameters, and $v_{0}$ is the initial speed in m/s. If the accelerating behaviour of a vehicle, whose driver intends to overtake a slow moving vehicle ahead, is described as,

$\frac{d v}{d t} = (α - β v)$

Considering

$α = 2 m / s^{2}, β = 0.05 s^{- 1} and$

$\frac{d v}{d t} = 1.3 m / s^{2} a t t = 3 s$ , the distance (in m) travelled by the vehicle in 35 sec is

900.96

Discussion

14986.	Two resistance r1 and r2 (r1< r2) are joined in parallel. The equivalent resistance R is such that1 R > r1 + r2 2 R > √r1 +√r23 r1 < R < r24 R < r1
Answer» Two resistance r1 and r2 (r1< r2) are joined in parallel. The equivalent resistance R is such that 1 R > r1 + r2 2 R > √r1 +√r2 3 r1 < R < r2 4 R < r1

Discussion

14987.	Find the magnifying power of a telescope, when the final image is formed at least distance of distinct vision. Focal length of used lenses are 12.5 cm and 100 cm.
Answer» Find the magnifying power of a telescope, when the final image is formed at least distance of distinct vision. Focal length of used lenses are $12.5 cm$ and $100 cm$ .

Discussion

14988.	A 200 Hz wave with amplitude 1 mm travels on a long string of linear mass density 6 g/m kept under a tension of 60 N. The average power transmitted across a given point in the string is
Answer» A $200 Hz$ wave with amplitude $1 mm$ travels on a long string of linear mass density $6 g/m$ kept under a tension of $60 N$ . The average power transmitted across a given point in the string is

Discussion

14989.	A continuous beam with constant EI is shown in the figure. Collapse load for this beam will be equal to
Answer» A continuous beam with constant EI is shown in the figure. Collapse load for this beam will be equal to

Discussion

14990.	Four particles of masses 1 g,2 g,3 g and 4 g are kept at points (0,0),(0,3 cm),(3 cm,3 cm),(3 cm,0) respectively. Find the moment of inertia of the system of particles (in g-cm2) about z axis.
Answer» Four particles of masses $1 g, 2 g, 3 g$ and $4 g$ are kept at points $(0, 0), (0, 3 cm), (3 cm, 3 cm), (3 cm, 0)$ respectively. Find the moment of inertia of the system of particles (in ${g-cm}^{2}$ ) about $z$ axis.

Discussion

14991.	A wooden plank of length 1 m and uniform cross-section is hinged at one end to the bottom of a tank, as shown in the figure. The tank is filled with water up to a height of 0.5 m. The specific gravity of the plank is 0.5. Then the angle θ that the plank makes with vertical in the equilibrium position is _______.(in degree)(Exclude the case θ=0∘)
Answer» A wooden plank of length $1 m$ and uniform cross-section is hinged at one end to the bottom of a tank, as shown in the figure. The tank is filled with water up to a height of $0.5 m$ . The specific gravity of the plank is $0.5$ . Then the angle $θ$ that the plank makes with vertical in the equilibrium position is _______. $($ in degree $)$ $($ Exclude the case $θ = 0^{\circ}$ )

Discussion

14992.	two bodies of masses 100 kg and 1000 kg are separated by dis†an ce 1m what is the intensity of gravitational field at the midpoint of the line joining them
Answer» two bodies of masses 100 kg and 1000 kg are separated by dis†an ce 1m what is the intensity of gravitational field at the midpoint of the line joining them

Discussion

14993.	21.Velocity of a particle varies w.r.t. time as =4/(\sqrt{}3 sint +cost) minimum velocity is
Answer» 21.Velocity of a particle varies w.r.t. time as =4/(\sqrt{}3 sint +cost) minimum velocity is

Discussion

14994.	why frequency of light remains unchanged during the refraction of light?
Answer» why frequency of light remains unchanged during the refraction of light?

Discussion

14995.	ntAn object is placed at the focus of a convex mirror.If its focal length is 20 cm,the distance of mirror isn
Answer» ntAn object is placed at the focus of a convex mirror.If its focal length is 20 cm,the distance of mirror isn

Discussion

14996.	30. If two circular disc are joined together, then what is the total moment of inertia of the lamina?
Answer» 30. If two circular disc are joined together, then what is the total moment of inertia of the lamina?

Discussion

14997.	ntQ. In a certain oscillatory system, the amplitude of motion is 5m and the time period id 4s. The time taken by the particle for passing between points which are at distances of 4m and 2m from the centre and on the same side of it will be:n nt1. 0.30sn nt2. 0.32sn nt3. 0.33sn nt4. 0.35sn ntn ntA.(3)n
Answer» ntQ. In a certain oscillatory system, the amplitude of motion is 5m and the time period id 4s. The time taken by the particle for passing between points which are at distances of 4m and 2m from the centre and on the same side of it will be:n nt1. 0.30sn nt2. 0.32sn nt3. 0.33sn nt4. 0.35sn ntn ntA.(3)n

Discussion

14998.	In an a-c circuit the reactance of coil is √3 times its resistance. The phase difference between the voltage across the coil to the current through coil is
Answer» In an a-c circuit the reactance of coil is $\sqrt{3}$ times its resistance. The phase difference between the voltage across the coil to the current through coil is

Discussion

14999.	A magnetic field →B=−B0^i exists within a sphere of radius R=√3v0T where T is the time period of one revolution of the charged particle starting its motion from origin and moving with a velocity →v=√3v02^i−v02^j. Find the number of turns that the particle will take before it comes out of the magnetic field:
Answer» A magnetic field $\to B = - B_{0}^i$ exists within a sphere of radius $R = \sqrt{3} v_{0} T$ where $T$ is the time period of one revolution of the charged particle starting its motion from origin and moving with a velocity $\to v = \frac{\sqrt{3} v_{0}}{2}^i - \frac{v_{0}}{2}^j$ . Find the number of turns that the particle will take before it comes out of the magnetic field:

Discussion

15000.	Which of the following ligands causes maximum crystal field splitting?
Answer» Which of the following ligands causes maximum crystal field splitting?

Discussion

Explore topic-wise InterviewSolutions in .

A convergent lens of power 16 D is used as a simple microscope the magnification produced by the lens when the final image is formed at least distance of dinstinct vision is

Two equal forces(F) have their resultant equal to either of the forces. Then, at what angle the forces are inclined?

Under what condition will the displacement and distance of a moving object has the same magnitude ?

The angular velocity of earth about its axis of rotation is

An object of specific gravity σ is hung from a massless string .The tension in string is T.The object is immersed in water so that one half of its volume is submerged .The new tension in the string is .

potential function under conservative is given as U=2xy-yz^2. Find Force at xy-yz^2.SOLVE IN DETAIL

State different ways to induce current in a coil.

What is the emitter current if IB=20 μA and β=100 ?

A 1500 kVA, 6.6/1.1 kV, 3-ϕ delta-star connection transformer has the following test data,when low voltage side is short circuited: 300 V, 30 kW, 131.2 Athe per phase reactance referred to delta side is ________Ω.3.55

A steel wire of original length 1 m and cross4 mm^2 is clamped at the two ends so that it lies horizontally and without tension. If a load of 2.16 kg issuspended from the middle point of wire what would be its vertical depression?, Y of the steel-2.0\ast10^{11} N m^{-2}. Take g-10 ms^-

what are angular and linear momentum

Statement I A cloth covers a table. Some dishes are kept on it. The cloth can be pulled out without dislodging the dishes from the table.Statement II For every action there is an equal and opposite reaction.

{ A stone of mass }1 kg is tied with a string and it }}{ is whirled in a vertical circle of radius }1m . If }}{ tension at the highest point is }14N , then velocity }} at lowest point will be }{ (1) }3m/s}{ (3) }6m/s

A boy on a cliff 49m high, drops a stone, one second later, he throws another stone vertically downwards. The two stones hit the ground at the same time. What was the velocity with which the second stone was thrown?

ntA non conducting sheet of large surface area and thickness d contains uniform charge distribution of density . Find the electric field at a point P inside the plate , at a distance x from the central plane. Draw a qualitative graph of electric field (E) against x for 0

What is the derivation of relation between kinetic energy and linear momentum?

17.Positive and negative point charges of equal magnitude are kept at (0,0,a/2)and(0,0,-a/2)respectively. The work done by the electric field when another positive point charge is moved from (–a,0,0) to (0,a,0) is

You are given that mass of 73Li=7.0160u,mass of 42He=4.0026 u and mass of 11H=1.0079 u. When 20 g of 73Li is converted into 42He by proton capture, the energy liberated, (in k Wh) is :[Mass of Nucleon =1 GeV/c2]

If a body has a charge of magnitude 8 × 10–19 coulomb. What is the correct combination of protons and electrons on it?

A current of 4 A flows in a coil when connected to a 12 V DC source. If the same coil is connected to a 12 V, 50 rad/s AC source, a RMS current of 2.4 A flows in the circuit. Find the power developed in the circuit if a 2500 μF capacitor is connected in series with the coil.

Helium gas goes through a cycle ABCDA (consisting of two isochoric and two isobaric lines) as shown in figure. Efficiency of this cycle is nearly: [Assume the gas to be an ideal gas]

Four particles each of mass m are arranged at the corners of a massless square of side a. The MI of system about an axis which is perpendicularto the plane of square and passes through one corner is

A boy walks to his school at a distance of 6 km with constant speed of 2.5 km/hour and walks back with a constant speed of 4 km/hr. His average speed for round trip expressed in km/hour, is

A heavy particle is projected with a velocity at an angle with the horizontal into a uniform gravitational field. The slope of the trajectory of the particle varies not according to which of the following curves?

a parallel llate capacitor is filled by a dielectric whose relative permittivity varies with applied voltage V as e=2V. a similar capacitor without dielectric is charged to 136V . it is then connected to the uncharged capacitor with the dielectric. the final voltage on the capacitors is ?

If p and q are the perpendicular distances from the origin to the straight lines x secθ−y cosecθ=α and x cosθ+y sinθ=αcos 2θ then

12. Consider a planet moving around a star in an elliptical orbit of with time period T. The area of elliptical orbit is proportional to

17. A-The quantity L/R possesses dimension of time R-to reduce the rate of increase of current through a solenoid we should increase the time constant

A Particle is moving such that its position co-ordinates (x, y) are (2m, 3m) at time t=0,(6m, 7m) at time t=2 s and (13m, 14m) at time t=5 s.the average velocity vector from t=0 to t=5 s is

The magnetic field lines due to a bar magnet are correctly shown in [1 Mark]

The molar conductances of NaCl, HCl and CH3COONa at infinite dilution are 126.45, 426.16 and 91 ohm-1 cm2 mol-1 respectively. The molar conductance of CH3COOH at infinite dilution is

There is a small hole in a hollow sphere. The water enters into it when it is taken to a depth of 40 cm under water. The surface tension of water is 0.07 N/m. The diameter of the hole is[Take g=10 m/s2]

A juggler is throwing balls vertically up in air at regular time interval of0.5sec. If at the most six balls are in air, then minimum speed with which he throws the balls is (g = 10 m/s2)

Two resistance r1 and r2 (r1< r2) are joined in parallel. The equivalent resistance R is such that1 R > r1 + r2 2 R > √r1 +√r23 r1 < R < r24 R < r1

Find the magnifying power of a telescope, when the final image is formed at least distance of distinct vision. Focal length of used lenses are 12.5 cm and 100 cm.

A 200 Hz wave with amplitude 1 mm travels on a long string of linear mass density 6 g/m kept under a tension of 60 N. The average power transmitted across a given point in the string is

A continuous beam with constant EI is shown in the figure. Collapse load for this beam will be equal to

Four particles of masses 1 g,2 g,3 g and 4 g are kept at points (0,0),(0,3 cm),(3 cm,3 cm),(3 cm,0) respectively. Find the moment of inertia of the system of particles (in g-cm2) about z axis.

two bodies of masses 100 kg and 1000 kg are separated by dis†an ce 1m what is the intensity of gravitational field at the midpoint of the line joining them

21.Velocity of a particle varies w.r.t. time as =4/(\sqrt{}3 sint +cost) minimum velocity is

why frequency of light remains unchanged during the refraction of light?

ntAn object is placed at the focus of a convex mirror.If its focal length is 20 cm,the distance of mirror isn

30. If two circular disc are joined together, then what is the total moment of inertia of the lamina?

In an a-c circuit the reactance of coil is √3 times its resistance. The phase difference between the voltage across the coil to the current through coil is

Which of the following ligands causes maximum crystal field splitting?