50278 + Interview Questions in Physics Page 170 InterviewSolution

8451.	two boys start running towards each other from two points they are 120 m apart one runs with a speed of 5m/s and other with a speed of 7 m/s .When and where do they meet each other from 1st poin
Answer» two boys start running towards each other from two points they are 120 m apart one runs with a speed of 5m/s and other with a speed of 7 m/s .When and where do they meet each other from 1st poin

Discussion

8452.	A 1 kg body falls vertically with a speed of 25 m/s and rebounds with a speed of 10 m/s. If the time for which the ball is in contact with the ground is 1 ms, what is the contact force on the body by the ground?
Answer» A $1 k g$ body falls vertically with a speed of $25 m / s$ and rebounds with a speed of $10 m / s$ . If the time for which the ball is in contact with the ground is $1 m s$ , what is the contact force on the body by the ground?

Discussion

8453.	A drunkard moves 3 step forward and 5 step backward.Each of his step is 1 m long and takes 1 sec .how much time will he take to fall in a pit 78 m awa
Answer» A drunkard moves 3 step forward and 5 step backward.Each of his step is 1 m long and takes 1 sec .how much time will he take to fall in a pit 78 m awa

Discussion

8454.	47. if acceleration due to gravity at a dis†an ce D
Answer» 47. if acceleration due to gravity at a dis†an ce D

Discussion

8455.	For the given transistor withβ=65 and VA=75V select correct option for transistor parameters
Answer» For the given transistor with $β = 65$ and $V_{A} = 75 V$ select correct option for transistor parameters

Discussion

8456.	A particle is released from height H.At certain height its kinetic energy is two times its potential energy,height of the particle from ground at that ins†an t is:
Answer» A particle is released from height H.At certain height its kinetic energy is two times its potential energy,height of the particle from ground at that ins†an t is:

Discussion

8457.	The density of water at the surface of the ocean is ρ. If the bulk modulus of water is B, what is the density of ocean water at a depth where the pressure is nP0 [P0 is the atmospheric pressure]?
Answer» The density of water at the surface of the ocean is $ρ$ . If the bulk modulus of water is $B$ , what is the density of ocean water at a depth where the pressure is $n P_{0}$ [ $P_{0}$ is the atmospheric pressure]?

Discussion

8458.	Arain drop of radius 2 mm falls from a height of 500 m above theground. It falls with decreasing acceleration (due to viscousresistance of the air) until at half its original height, it attainsits maximum (terminal) speed, and moves with uniform speedthereafter. What is the work done by the gravitational force on thedrop in the first and second half of its journey? What is the workdone by the resistive force in the entire journey if its speed onreaching the ground is 10 m s–1?
Answer» A rain drop of radius 2 mm falls from a height of 500 m above the ground. It falls with decreasing acceleration (due to viscous resistance of the air) until at half its original height, it attains its maximum (terminal) speed, and moves with uniform speed thereafter. What is the work done by the gravitational force on the drop in the first and second half of its journey? What is the work done by the resistive force in the entire journey if its speed on reaching the ground is 10 m s^–1?

Discussion

8459.	When photons of wavelength λ1 are incident on a metal plate, the corresponding stopping potential is found to be V. When photons of wavelength λ2 are used, the corresponding stopping potential was thrice the above value. If light of wavelength λ3 is used, the stopping potential for wavelength λ3 in terms of λ1 and λ2 will be
Answer» When photons of wavelength $λ_{1}$ are incident on a metal plate, the corresponding stopping potential is found to be $V$ . When photons of wavelength $λ_{2}$ are used, the corresponding stopping potential was thrice the above value. If light of wavelength $λ_{3}$ is used, the stopping potential for wavelength $λ_{3}$ in terms of $λ_{1}$ and $λ_{2}$ will be

Discussion

8460.	Referring to above question, the angle with the horizontal at which the projectile was projected is
Answer» Referring to above question, the angle with the horizontal at which the projectile was projected is

Discussion

8461.	The unit vector perpendicular to the vector ^i−^j and ^i+^j forming a right handed system, is
Answer» The unit vector perpendicular to the vector $^i -^j$ and $^i +^j$ forming a right handed system, is

Discussion

8462.	The figure shows a circular wire-loop of radius a=20 cm, carrying a current I, placed in a perpendicular magnetic field 4 T. If the tension in the wire is 4 N, find the value of I.
Answer» The figure shows a circular wire-loop of radius $a = 20 cm$ , carrying a current $I$ , placed in a perpendicular magnetic field $4 T$ . If the tension in the wire is $4 N$ , find the value of $I$ .

Discussion

8463.	An ideal n−channel MOSFET has the following parameters,threshold voltage VT=0.65V and oxide thickness is 0.4nm.It is found that the MOSFET operating in saturationregion with VDS=6V. Then the power dissipation in theMOSFET with VGS=4 V isμnCaxWL=1.5×10−3A/V2,
Answer» $A n i d e a l n - c h a n n e l M O S F E T h a s t h e f o l l o w i n g p a r a m e t e r s, t h r e s h o l d v o l t a g e V_{T} = 0.65 V a n d o x i d e t h i c k n e s s i s 0.4 n m . I t i s f o u n d t h a t t h e M O S F E T o p e r a t i n g i n s a t u r a t i o n r e g i o n w i t h V_{D S} = 6 V . T h e n t h e p o w e r d i s s i p a t i o n i n t h e M O S F E T w i t h V_{G S} = 4 V i s μ_{n} C_{a x} \frac{W}{L} = 1.5 \times 10^{- 3} A / V^{2},$

Discussion

8464.	Assume that a car is able to stop with a retardation of 8 m/s2 and that a driver can react to an emergency in 0.5 sec. Calculate the overall stopping distance of the car for a speed of 72 km/hr of the car
Answer» Assume that a car is able to stop with a retardation of $8 {m/s}^{2}$ and that a driver can react to an emergency in $0.5 sec$ . Calculate the overall stopping distance of the car for a speed of $72 km/hr$ of the car

Discussion

8465.	188 For a normal eye the far point is at infinity & near point is 25 cm the cornea of eye provides converging power of 40 diopter & least converging power of eye lens is about 20 dioptres . The range of accommodation (i.e. range of converging power of eye lens ) (in dioptre)is
Answer» 188 For a normal eye the far point is at infinity & near point is 25 cm the cornea of eye provides converging power of 40 diopter & least converging power of eye lens is about 20 dioptres . The range of accommodation (i.e. range of converging power of eye lens ) (in dioptre)is

Discussion

8466.	The F−x graph is shown below. Find the change in potential energy from x=0 to x=5 m
Answer» The $F - x$ graph is shown below. Find the change in potential energy from $x = 0$ to $x = 5 m$

Discussion

8467.	The order of magnitude of 2^{20}will be
Answer» The order of magnitude of 2^{20}will be

Discussion

8468.	Researchers have found that it takes only 375 joules of energy to crack a bone. The corresponding energy in eV is
Answer» Researchers have found that it takes only $375$ joules of energy to crack a bone. The corresponding energy in $eV$ is

Discussion

8469.	ring of mass m and radius R is pivoted at a pointon its periphery. It oscillates with time period T. If apoint mass m is gently attached at lowest point,then new time period is
Answer» ring of mass m and radius R is pivoted at a point on its periphery. It oscillates with time period T. If a point mass m is gently attached at lowest point, then new time period is

Discussion

8470.	A cube of side a is placed on an inclined plane of inclination θ. What is the maximum value of θ for which the cube will not topple?
Answer» A cube of side $a$ is placed on an inclined plane of inclination $θ .$ What is the maximum value of $θ$ for which the cube will not topple?

Discussion

8471.	40.A person of mass m is standing on one end of a plank of mass M and length L and floating in water. The person moves from one end to another and stops. Work done by normal force is
Answer» 40.A person of mass m is standing on one end of a plank of mass M and length L and floating in water. The person moves from one end to another and stops. Work done by normal force is

Discussion

8472.	Consider the circuit shown in the figure below:If the op-amp has a finite open loop gain A0. Then the value of pole frequency is equal to
Answer» Consider the circuit shown in the figure below: $If the op-amp has a finite open loop gain A_{0} . Then the value of pole frequency is equal to$

Discussion

8473.	The speed at the maximum height of a projectile is half of its initial speed of projection (u). The horizontal range of projectile is
Answer» The speed at the maximum height of a projectile is half of its initial speed of projection (u). The horizontal range of projectile is

Discussion

8474.	Consider the circuit shown below, switch is closed at t= 0 sec. When two diodes are ideal, voltage across the capacitor at t-=200 msec is ______ Volts.(Initial voltage of capacitor Vc(0−)=0)0
Answer» Consider the circuit shown below, switch is closed at t= 0 sec. When two diodes are ideal, voltage across the capacitor at t-=200 msec is ______ Volts. (Initial voltage of capacitor $V_{c} (0^{-}) = 0$ ) 0

Discussion

8475.	A pulse of light of duration 100 ns is absorbed completely by an object, initially at rest. Power of the pulse is 30 mW. The final momentum of the object is,
Answer» A pulse of light of duration $100 ns$ is absorbed completely by an object, initially at rest. Power of the pulse is $30 mW$ . The final momentum of the object is,

Discussion

8476.	Consider the diffraction pattern obtained with a single slit, illuminated at normal incidence. At the angular position of the first diffraction minimum, the phase difference (in radians) between the wavelets from the opposite edges of the slit is:
Answer» Consider the diffraction pattern obtained with a single slit, illuminated at normal incidence. At the angular position of the first diffraction minimum, the phase difference (in radians) between the wavelets from the opposite edges of the slit is:

Discussion

8477.	A spherical metal shell A of radius RA and a solid metal sphere B of radius RB(<RA) are kept far apart and each is given charge Q. Now they are connected by a thin metal wire.Then
Answer» A spherical metal shell $A$ of radius $R_{A}$ and a solid metal sphere $B$ of radius $R_{B} (< R_{A})$ are kept far apart and each is given charge $Q .$ Now they are connected by a thin metal wire. Then

Discussion

8478.	From a tap 10 m high, water drops fall at regular intervals. When the first drop reaches the ground, the 5th drop is about to leave the tap. Find the separation between 2nd and 3rd drops.
Answer» From a tap $10 m$ high, water drops fall at regular intervals. When the first drop reaches the ground, the $5^{t h}$ drop is about to leave the tap. Find the separation between $2^{n d}$ and $3^{r d}$ drops.

Discussion

8479.	Two coils X and Y are placed in a circuit such that when the current changes by 2 A in coil X the magnetic flux changes by 0.4 Wb in Y. The value of mutual inductance of the coils is-
Answer» Two coils $X$ and $Y$ are placed in a circuit such that when the current changes by $2 A$ in coil $X$ the magnetic flux changes by $0.4 Wb$ in $Y$ . The value of mutual inductance of the coils is-

Discussion

8480.	In the circuit of the figure, the voltage v(t) is
Answer» In the circuit of the figure, the voltage v(t) is

Discussion

8481.	S.I. unit of universal gas constant is
Answer» S.I. unit of universal gas constant is

8481.

S.I. unit of universal gas constant is

Answer»

S.I. unit of universal gas constant is

Discussion

8482.	The area bounded by the curvesx=0,y=0 and y=\|lnx\|& y=\|ln\|x\|\| is
Answer» The area bounded by the curves $x = 0, y = 0$ and $y = \| ln x \|$ & $y = \| ln \| x \| \|$ is

Discussion

8483.	at what depth from the surface the value of acceleration due to gravity becomes 1/4th of value of g on surface
Answer» at what depth from the surface the value of acceleration due to gravity becomes 1/4th of value of g on surface

Discussion

8484.	A force acts for 10 sec on a body of mass 100 kg after which it ceases. If the body travels 160 m in the next 8 sec, find the magnitude of the force.
Answer» A force acts for 10 sec on a body of mass $100 kg$ after which it ceases. If the body travels $160 m$ in the next 8 sec, find the magnitude of the force.

Discussion

8485.	(a) Th emagnetic field in a region varies as shown in figure (38-E1). Calculate the average induced emf in a conducting loop of area 2.0×10−3m2 placed perpendicular to the field in each of the 10 ms intervals shown. (b) In which intervals is the emf not constant? Neglect the behaviour near the ends of 10 ms intervals.
Answer» (a) Th emagnetic field in a region varies as shown in figure (38-E1). Calculate the average induced emf in a conducting loop of area $2.0 \times 10^{- 3} m^{2}$ placed perpendicular to the field in each of the 10 ms intervals shown. (b) In which intervals is the emf not constant? Neglect the behaviour near the ends of 10 ms intervals.

8485.

(a) Th emagnetic field in a region varies as shown in figure (38-E1). Calculate the average induced emf in a conducting loop of area 2.0×10−3m2 placed perpendicular to the field in each of the 10 ms intervals shown. (b) In which intervals is the emf not constant? Neglect the behaviour near the ends of 10 ms intervals.

Answer»

(a) Th emagnetic field in a region varies as shown in figure (38-E1). Calculate the average induced emf in a conducting loop of area $2.0 \times 10^{- 3} m^{2}$ placed perpendicular to the field in each of the 10 ms intervals shown. (b) In which intervals is the emf not constant? Neglect the behaviour near the ends of 10 ms intervals.

Discussion

8486.	If velocity is variable speed and acceleration will be ?
Answer» If velocity is variable speed and acceleration will be ?

Discussion

8487.	2.A block slides down a smooth inclined plane when realeased from the top,while another falls freely from the same point.Which of the following is/are correct?Explain (A)Sliding block will reach the ground first. (B)Freely falling block will reach the ground first (C)Both the blocks will reach the ground with different speeds (D)Both the blocks will reach the ground with the same speed.
Answer» 2.A block slides down a smooth inclined plane when realeased from the top,while another falls freely from the same point.Which of the following is/are correct?Explain (A)Sliding block will reach the ground first. (B)Freely falling block will reach the ground first (C)Both the blocks will reach the ground with different speeds (D)Both the blocks will reach the ground with the same speed.

Discussion

8488.	The velocity-displacement graph for a car on a straight road is shown in figureDetermine the acceleration of the car at s=150 m.
Answer» The velocity-displacement graph for a car on a straight road is shown in figure Determine the acceleration of the car at $s = 150 m$ .

Discussion

8489.	In a Wheatstone bridge (see fig.), resistances P and Q are approximately equal. When R=400 Ω, the bridge is balanced. On interchanging P and Q, the value of R, for balance, is 405 Ω. The value of X is close to:
Answer» In a Wheatstone bridge (see fig.), resistances $P$ and $Q$ are approximately equal. When $R = 400 Ω,$ the bridge is balanced. On interchanging $P$ and $Q$ , the value of $R$ , for balance, is $405 Ω$ . The value of $X$ is close to:

Discussion

8490.	A particle of mass m is situated at the center of spherical shell of same mass and radius a . The gravitational potential at a point which is at a 3a/2 distance from the center of shell will be
Answer» A particle of mass m is situated at the center of spherical shell of same mass and radius a . The gravitational potential at a point which is at a 3a/2 distance from the center of shell will be

Discussion

8491.	The bending force required for a 1.5 mm thick steel (having ultimate tensile strength 800 MPa) sheet of 1 m length to be bent in a wiping die (K = 0.33) is kN. The die radius used is 3 mm. (By using the governing equation = bending force, Fb=kLσt2W)Every symbol has their using meaning.79.2
Answer» $The bending force required for a 1.5 mm thick steel (having ultimate tensile strength 800 MPa) sheet of 1 m length to be bent in a wiping die (K = 0.33) is kN. The die radius used is 3 mm. (By using the governing equation = bending force, F_{b} = \frac{k L σ t^{2}}{W}) Every symbol has their using meaning.$ 79.2

Discussion

8492.	The intake in figure has cross-sectional area of 0.74 m2 and water flow at 0.40 m/s. At the outlet, distance D=180 m below the intake, the cross sectional area is smaller than at the intake and the water flows out at 9.5 m/s into equipment. What is the pressure difference between inlet and outlet?
Answer» The intake in figure has cross-sectional area of $0.74 m^{2}$ and water flow at $0.40 m/s$ . At the outlet, distance $D = 180 m$ below the intake, the cross sectional area is smaller than at the intake and the water flows out at $9.5 m/s$ into equipment. What is the pressure difference between inlet and outlet?

Discussion

8493.	25.The electrostatic potential difference between points A and B, V(A)-V(B), which are distances r(A)=2m and r(B)=1m from an infinitely long thin wire with linear charge density equal to 1 microC is?
Answer» 25.The electrostatic potential difference between points A and B, V(A)-V(B), which are distances r(A)=2m and r(B)=1m from an infinitely long thin wire with linear charge density equal to 1 microC is?

Discussion

8494.	An engine pumps water through a hose pipe. Water passes through the pipe and leaves it with a velocity of 2 m/s. The mass per unit length of water in the pipe is 100 kg/m. What is the power of the engine ?
Answer» An engine pumps water through a hose pipe. Water passes through the pipe and leaves it with a velocity of 2 m/s. The mass per unit length of water in the pipe is 100 kg/m. What is the power of the engine ?

Discussion

8495.	Air stream horizontally past an air plane .the speed over the top surface is 60m/s and that under the bottom surface is 45m/s .the density of air is 1.293 kg/m³ then the diff in pressure is
Answer» Air stream horizontally past an air plane .the speed over the top surface is 60m/s and that under the bottom surface is 45m/s .the density of air is 1.293 kg/m³ then the diff in pressure is

Discussion

8496.	Which of the statements given in Exercise 14.1 is true for p-type semiconductors.
Answer» Which of the statements given in Exercise 14.1 is true for p-type semiconductors.

Discussion

8497.	If the voltage of a source in an AC circuit is represented by the equation, E=220√2sin(314t). The frequency of the voltage is -Take π=3.14
Answer» If the voltage of a source in an AC circuit is represented by the equation, $E = 220 \sqrt{2} sin (314 t)$ . The frequency of the voltage is - Take $π = 3.14$

Discussion

8498.	Following results are obtained from a test on an air compressor. Compressor delivery stagnation pressure is 2.97 bar and compressor delivery stagnation temperature is 427 K. Ambient condition is 0.99 bar and 288 K. The isotropic efficiency of compressor is (Take γ=1.4 for air)
Answer» Following results are obtained from a test on an air compressor. Compressor delivery stagnation pressure is 2.97 bar and compressor delivery stagnation temperature is 427 K. Ambient condition is 0.99 bar and 288 K. The isotropic efficiency of compressor is (Take $γ = 1.4$ for air)

Discussion

8499.	A block performs SHM and its equation is given as x=4+5 sinπ t. Which of these would be its correct representation?
Answer» A block performs SHM and its equation is given as $x = 4 + 5 s i n π t$ . Which of these would be its correct representation?

Discussion

8500.	There is a uniform electric field E between two parallel plates.An electron moving perpendicular to the field enters with the velocity V . Assuming the force of gravity to be negligible, derive the expression for vertical displacement of the electron when emerging from the plates.Charge of the electron in e and mass m.
Answer» There is a uniform electric field E between two parallel plates.An electron moving perpendicular to the field enters with the velocity V . Assuming the force of gravity to be negligible, derive the expression for vertical displacement of the electron when emerging from the plates.Charge of the electron in e and mass m.

Discussion

Explore topic-wise InterviewSolutions in .

two boys start running towards each other from two points they are 120 m apart one runs with a speed of 5m/s and other with a speed of 7 m/s .When and where do they meet each other from 1st poin

A 1 kg body falls vertically with a speed of 25 m/s and rebounds with a speed of 10 m/s. If the time for which the ball is in contact with the ground is 1 ms, what is the contact force on the body by the ground?

A drunkard moves 3 step forward and 5 step backward.Each of his step is 1 m long and takes 1 sec .how much time will he take to fall in a pit 78 m awa

47. if acceleration due to gravity at a dis†an ce D

For the given transistor withβ=65 and VA=75V select correct option for transistor parameters

A particle is released from height H.At certain height its kinetic energy is two times its potential energy,height of the particle from ground at that ins†an t is:

The density of water at the surface of the ocean is ρ. If the bulk modulus of water is B, what is the density of ocean water at a depth where the pressure is nP0 [P0 is the atmospheric pressure]?

Referring to above question, the angle with the horizontal at which the projectile was projected is

The unit vector perpendicular to the vector ^i−^j and ^i+^j forming a right handed system, is

The figure shows a circular wire-loop of radius a=20 cm, carrying a current I, placed in a perpendicular magnetic field 4 T. If the tension in the wire is 4 N, find the value of I.

An ideal n−channel MOSFET has the following parameters,threshold voltage VT=0.65V and oxide thickness is 0.4nm.It is found that the MOSFET operating in saturationregion with VDS=6V. Then the power dissipation in theMOSFET with VGS=4 V isμnCaxWL=1.5×10−3A/V2,

Assume that a car is able to stop with a retardation of 8 m/s2 and that a driver can react to an emergency in 0.5 sec. Calculate the overall stopping distance of the car for a speed of 72 km/hr of the car

188 For a normal eye the far point is at infinity & near point is 25 cm the cornea of eye provides converging power of 40 diopter & least converging power of eye lens is about 20 dioptres . The range of accommodation (i.e. range of converging power of eye lens ) (in dioptre)is

The F−x graph is shown below. Find the change in potential energy from x=0 to x=5 m

The order of magnitude of 2^{20}will be

Researchers have found that it takes only 375 joules of energy to crack a bone. The corresponding energy in eV is

ring of mass m and radius R is pivoted at a pointon its periphery. It oscillates with time period T. If apoint mass m is gently attached at lowest point,then new time period is

A cube of side a is placed on an inclined plane of inclination θ. What is the maximum value of θ for which the cube will not topple?

40.A person of mass m is standing on one end of a plank of mass M and length L and floating in water. The person moves from one end to another and stops. Work done by normal force is

Consider the circuit shown in the figure below:If the op-amp has a finite open loop gain A0. Then the value of pole frequency is equal to

The speed at the maximum height of a projectile is half of its initial speed of projection (u). The horizontal range of projectile is

Consider the circuit shown below, switch is closed at t= 0 sec. When two diodes are ideal, voltage across the capacitor at t-=200 msec is ______ Volts.(Initial voltage of capacitor Vc(0−)=0)0

A pulse of light of duration 100 ns is absorbed completely by an object, initially at rest. Power of the pulse is 30 mW. The final momentum of the object is,

Consider the diffraction pattern obtained with a single slit, illuminated at normal incidence. At the angular position of the first diffraction minimum, the phase difference (in radians) between the wavelets from the opposite edges of the slit is:

A spherical metal shell A of radius RA and a solid metal sphere B of radius RB(&lt;RA) are kept far apart and each is given charge Q. Now they are connected by a thin metal wire.Then

From a tap 10 m high, water drops fall at regular intervals. When the first drop reaches the ground, the 5th drop is about to leave the tap. Find the separation between 2nd and 3rd drops.

Two coils X and Y are placed in a circuit such that when the current changes by 2 A in coil X the magnetic flux changes by 0.4 Wb in Y. The value of mutual inductance of the coils is-

In the circuit of the figure, the voltage v(t) is

S.I. unit of universal gas constant is

The area bounded by the curvesx=0,y=0 and y=|lnx|& y=|ln|x|| is

at what depth from the surface the value of acceleration due to gravity becomes 1/4th of value of g on surface

A force acts for 10 sec on a body of mass 100 kg after which it ceases. If the body travels 160 m in the next 8 sec, find the magnitude of the force.

If velocity is variable speed and acceleration will be ?

The velocity-displacement graph for a car on a straight road is shown in figureDetermine the acceleration of the car at s=150 m.

In a Wheatstone bridge (see fig.), resistances P and Q are approximately equal. When R=400 Ω, the bridge is balanced. On interchanging P and Q, the value of R, for balance, is 405 Ω. The value of X is close to:

A particle of mass m is situated at the center of spherical shell of same mass and radius a . The gravitational potential at a point which is at a 3a/2 distance from the center of shell will be

The bending force required for a 1.5 mm thick steel (having ultimate tensile strength 800 MPa) sheet of 1 m length to be bent in a wiping die (K = 0.33) is kN. The die radius used is 3 mm. (By using the governing equation = bending force, Fb=kLσt2W)Every symbol has their using meaning.79.2

The intake in figure has cross-sectional area of 0.74 m2 and water flow at 0.40 m/s. At the outlet, distance D=180 m below the intake, the cross sectional area is smaller than at the intake and the water flows out at 9.5 m/s into equipment. What is the pressure difference between inlet and outlet?

25.The electrostatic potential difference between points A and B, V(A)-V(B), which are distances r(A)=2m and r(B)=1m from an infinitely long thin wire with linear charge density equal to 1 microC is?

An engine pumps water through a hose pipe. Water passes through the pipe and leaves it with a velocity of 2 m/s. The mass per unit length of water in the pipe is 100 kg/m. What is the power of the engine ?

Air stream horizontally past an air plane .the speed over the top surface is 60m/s and that under the bottom surface is 45m/s .the density of air is 1.293 kg/m³ then the diff in pressure is

Which of the statements given in Exercise 14.1 is true for p-type semiconductors.

If the voltage of a source in an AC circuit is represented by the equation, E=220√2sin(314t). The frequency of the voltage is -Take π=3.14

Following results are obtained from a test on an air compressor. Compressor delivery stagnation pressure is 2.97 bar and compressor delivery stagnation temperature is 427 K. Ambient condition is 0.99 bar and 288 K. The isotropic efficiency of compressor is (Take γ=1.4 for air)

A block performs SHM and its equation is given as x=4+5 sinπ t. Which of these would be its correct representation?

A spherical metal shell A of radius RA and a solid metal sphere B of radius RB(<RA) are kept far apart and each is given charge Q. Now they are connected by a thin metal wire.Then