9478 + Interview Questions in Physics Page 22 InterviewSolution

1051.	What is the difference between a tornado and a cyclone? [3 MARKS]
Answer» What is the difference between a tornado and a cyclone? [3 MARKS]

Discussion

1052.	What is the difference between longitudinal and transverse wave?
Answer» What is the difference between longitudinal and transverse wave?

Discussion

1053.	How cyclones are formed in nature?
Answer» How cyclones are formed in nature?

Discussion

1054.	Question 10 (i) State whether the following statement is ‘True’ or ‘False’. The planet nearest to us is Jupiter.
Answer» Question 10 (i) State whether the following statement is ‘True’ or ‘False’. The planet nearest to us is Jupiter.

Discussion

1055.	Question 6Which of the following statements is incorrect?(a) Friction acts on a ball rolling along the ground.(b) Friction acts on a boat moving on water.(c) Friction acts on a bicycle moving on a smooth road.(d) Friction does not act on a ball moving through air.
Answer» Question 6 Which of the following statements is incorrect? (a) Friction acts on a ball rolling along the ground. (b) Friction acts on a boat moving on water. (c) Friction acts on a bicycle moving on a smooth road. (d) Friction does not act on a ball moving through air.

Discussion

1056.	Which of the following blocks will not experience any frictional force on application of external force(s) on it?
Answer» Which of the following blocks will not experience any frictional force on application of external force(s) on it?

Discussion

1057.	A uniform rope of length L is pulled by a constant force P as shown. The tension is the rope at a distance x from the end where the force is applied is
Answer» A uniform rope of length L is pulled by a constant force P as shown. The tension is the rope at a distance x from the end where the force is applied is

Discussion

1058.	Why is the candle in the mirror not called an object?
Answer» Why is the candle in the mirror not called an object?

Discussion

1059.	25ml of an aquous solution of KCl was found to require 20ml of 1M AgNO3 solution for titration the depression in freezing point of KCl solution with 100% ionisation will be
Answer» 25ml of an aquous solution of KCl was found to require 20ml of 1M AgNO3 solution for titration the depression in freezing point of KCl solution with 100% ionisation will be

Discussion

1060.	Why does bubbles appears when liquid is heated
Answer» Why does bubbles appears when liquid is heated

Discussion

1061.	Which of the following is not a possible representation of magnetic field lines?
Answer» Which of the following is not a possible representation of magnetic field lines?

Discussion

1062.	Two planets have radii r, and r, and densities dand d, respectively. The ratio of the accelerationdue to gravity on them will be(2) r,d,: r,d2(4) r,d?:r2d(1) r,d2: 2d,(3) rfd, rd2foce varies as r'
Answer» Two planets have radii r, and r, and densities dand d, respectively. The ratio of the accelerationdue to gravity on them will be(2) r,d,: r,d2(4) r,d?:r2d(1) r,d2: 2d,(3) rfd, rd2foce varies as r'

Discussion

1063.	if the string of a conical pendulum makes an angle θ with horiontal,then square of its time period is proportional t
Answer» if the string of a conical pendulum makes an angle θ with horiontal,then square of its time period is proportional t

Discussion

1064.	how can virtual plane mirror form an image
Answer» how can virtual plane mirror form an image

Discussion

1065.	97.Two point charges separated by distance Delhi repel each other with a force 9N .If separation between them becomes 3d then force of repulsion will be
Answer» 97.Two point charges separated by distance Delhi repel each other with a force 9N .If separation between them becomes 3d then force of repulsion will be

Discussion

1066.	The process of transferring a charge from a charged body to the earth is called as ___ .
Answer» The process of transferring a charge from a charged body to the earth is called as ___ .

Discussion

1067.	The coefficient of volume expansion of mercury is 20 times the coefficient of linear expansion of glass. Find the volume of mercury that must be poured into a glass vessel of volume V so that the volume above mercury may remain constant at all temperature
Answer» The coefficient of volume expansion of mercury is $20$ times the coefficient of linear expansion of glass. Find the volume of mercury that must be poured into a glass vessel of volume V so that the volume above mercury may remain constant at all temperature

Discussion

1068.	An archerstretches her bow while taking aim at the target. She then releasesthe arrow, which begins to move towards the target. Based on thisinformation fill up the gaps in the following statements using thefollowing terms.muscular,contact, non-contact, gravity, friction, shape, attraction(a) To stretch the bow, the archer applies a forcethat causes a change in its _______.(b) The force applied by the archer to stretch thebow is an example of ________force.(c) The type of force responsible for a change inthe state of motion of the arrow is an example of a _______force.(d) While the arrow moves towards its target, theforces acting on it are due to ________and that due to ________of air.
Answer» An archer stretches her bow while taking aim at the target. She then releases the arrow, which begins to move towards the target. Based on this information fill up the gaps in the following statements using the following terms. muscular, contact, non-contact, gravity, friction, shape, attraction (a) To stretch the bow, the archer applies a force that causes a change in its _______. (b) The force applied by the archer to stretch the bow is an example of ________ force. (c) The type of force responsible for a change in the state of motion of the arrow is an example of a _______ force. (d) While the arrow moves towards its target, the forces acting on it are due to ________ and that due to ________ of air.

1068.

An archerstretches her bow while taking aim at the target. She then releasesthe arrow, which begins to move towards the target. Based on thisinformation fill up the gaps in the following statements using thefollowing terms.muscular,contact, non-contact, gravity, friction, shape, attraction(a) To stretch the bow, the archer applies a forcethat causes a change in its ___.(b) The force applied by the archer to stretch thebow is an example of force.(c) The type of force responsible for a change inthe state of motion of the arrow is an example of a _force.(d) While the arrow moves towards its target, theforces acting on it are due to and that due to __of air.

Answer»

An archer
stretches her bow while taking aim at the target. She then releases
the arrow, which begins to move towards the target. Based on this
information fill up the gaps in the following statements using the
following terms.

muscular,
contact, non-contact, gravity, friction, shape, attraction

(a) To stretch the bow, the archer applies a force
that causes a change in its _______.

(b) The force applied by the archer to stretch the
bow is an example of ________
force.

(c) The type of force responsible for a change in
the state of motion of the arrow is an example of a _______
force.

(d) While the arrow moves towards its target, the
forces acting on it are due to ________
and that due to ________
of air.

Discussion

1069.	. A uniform string resonates with a tuning fork, at amaximum tension of 32 N. If it is divided into twosegments by placing a wedge at a distance one-fourth of length from one end, then to resonancewith same frequency the maximum value of tensionfor string will be(1) 2 N3) 8 N(2) 4 N(4) 16 N
Answer» . A uniform string resonates with a tuning fork, at amaximum tension of 32 N. If it is divided into twosegments by placing a wedge at a distance one-fourth of length from one end, then to resonancewith same frequency the maximum value of tensionfor string will be(1) 2 N3) 8 N(2) 4 N(4) 16 N

Discussion

1070.	Two planets have radii R1 and R2 and densities P1 and P2 respectively the ratio of the acceleration due to gravity at the surface is:-A) R1R2/P1P2B) R2squareP1/R1squareP2C)R1P1/R2P2
Answer» Two planets have radii R1 and R2 and densities P1 and P2 respectively the ratio of the acceleration due to gravity at the surface is:- A) R1R2/P1P2 B) R2squareP1/R1squareP2 C)R1P1/R2P2

Discussion

1071.	The earthquake occured at Bhuj and Kashmir created a lot of damage to life and property. Based on the impact created, can you guess the approximate magnitude of earthquakes on Richter scale?
Answer» The earthquake occured at Bhuj and Kashmir created a lot of damage to life and property. Based on the impact created, can you guess the approximate magnitude of earthquakes on Richter scale?

Discussion

1072.	The energy absorbed by each molecule (A) of asubstance is 4.4 x 10-19 J and bond energy permolecule is 4.0 x 10-19 J. The kinetic energy of themolecule per atom will be \lbrack AIPMT (Prelims)-2009\rbrack (1) 2.2 x 10-19 J (2) 2.0 x 10-19 J (3) 4.0 x 10-20J (4) 2.0 x 10-20
Answer» The energy absorbed by each molecule (A) of asubstance is 4.4 x 10-19 J and bond energy permolecule is 4.0 x 10-19 J. The kinetic energy of themolecule per atom will be \lbrack AIPMT (Prelims)-2009\rbrack (1) 2.2 x 10-19 J (2) 2.0 x 10-19 J (3) 4.0 x 10-20J (4) 2.0 x 10-20

Discussion

1073.	What is the difference between concave and convex mirror
Answer» What is the difference between concave and convex mirror

Discussion

1074.	ntFour charges +q,-q,+q,-q are placed in order on the four consecutive corners of a square of side 'L'. The work done in interchanging the position of two negighbouring charges of opposite sign isn ntn ntn
Answer» ntFour charges +q,-q,+q,-q are placed in order on the four consecutive corners of a square of side 'L'. The work done in interchanging the position of two negighbouring charges of opposite sign isn ntn ntn

Discussion

1075.	A sound source sends waves of 400 Hz. It produces waves of wavelength 2.5 m. The velocity of sound waves is:1000
Answer» A sound source sends waves of $400 H z$ . It produces waves of wavelength $2.5 m$ . The velocity of sound waves is: 1000

Discussion

1076.	Which is formed easily ? KCl or KI or KBr or CaBr2
Answer» Which is formed easily ? KCl or KI or KBr or CaBr2

Discussion

1077.	In a steam power plant operating on a ideal Rankine cycle, superheated steam enters the turbine at 3 MPa and 350oC. The condenser pressure is 75kPa. The thermal efficiency of the cycle is .......Given data: For saturated liquid at p=75 kPa, hf=384.39 kJ/kg, vf=0.001037m3/kg,sf=1.213kJ/kgKAt 75kPa,hfg=2278..6kJ/kg,sfg=6.2434 kJKAt p=3Mpa and T=350oC (superheated steam), h=3115.3kJ/kg,s=6.7428/,kJ/kgK 26.01
Answer» In a steam power plant operating on a ideal Rankine cycle, superheated steam enters the turbine at $3$ MPa and $350^{o}$ C. The condenser pressure is $75$ kPa. The thermal efficiency of the cycle is ....... Given data: For saturated liquid at $p = 75$ kPa, $h_{f} = 384.39$ $k J / k g,$ $v_{f} = 0.001037 m^{3} / k g$ , $s_{f} = 1.213 k J / k g K$ At $75 k P a, h_{f g} = 2278..6 k J / k g$ , $s_{f g} = 6.2434$ $k J K$ At $p = 3 M p a$ and $T = 350^{o} C$ (superheated steam), $h = 3115.3 k J / k g, s = 6.7428 /, k J / k g K$ 26.01

Discussion

1078.	34. Two isolated metallic spheres of radii 2 cm and4 cm are given equal charge, then the ratio ofcharge density on the surfaces of the spheres willbe
Answer» 34. Two isolated metallic spheres of radii 2 cm and4 cm are given equal charge, then the ratio ofcharge density on the surfaces of the spheres willbe

Discussion

1079.	How does a air conditioner work?
Answer» How does a air conditioner work?

Discussion

1080.	A ray of light is incident at 60∘, on glass-air interface. Then the light ray will- Use : [μw = √2 , μa=1]
Answer» A ray of light is incident at $60^{\circ}$ , on glass-air interface. Then the light ray will- Use : $[μ_{w}$ = $\sqrt{2}$ , $μ_{a} = 1]$

1080.

A ray of light is incident at 60∘, on glass-air interface. Then the light ray will- Use : [μw = √2 , μa=1]

Answer»

A ray of light is incident at $60^{\circ}$ , on glass-air interface. Then the light ray will-

Use : $[μ_{w}$ = $\sqrt{2}$ , $μ_{a} = 1]$

Discussion

1081.	How can we become a scientist in NASA can you give guidelines pls which subject to choose pls tell
Answer» How can we become a scientist in NASA can you give guidelines pls which subject to choose pls tell

Discussion

1082.	A body is being moved from rest along a straight line by a machine delivering constant power.the distance covered by the body in time &quott" is prportional to?
Answer» A body is being moved from rest along a straight line by a machine delivering constant power.the distance covered by the body in time "t" is prportional to?

Discussion

1083.	A beam of rectangular section 250 m wide and 500 mm effective depth is provided with 4 bars of 18 mm diameter as tensile steel of grade Fe250. The depth of neutral axis from the extreme compression fibre is _____ cm. [Use M20 concrete]12.3
Answer» A beam of rectangular section 250 m wide and 500 mm effective depth is provided with 4 bars of 18 mm diameter as tensile steel of grade Fe250. The depth of neutral axis from the extreme compression fibre is _____ cm. [Use M20 concrete] 12.3

Discussion

1084.	D/dx of x to the power root xHow to solve this??
Answer» D/dx of x to the power root x How to solve this??

Discussion

1085.	Himanshu took red coloured hot water and blue coloured cold water and poured them into a beaker containing water at room temperature. How will the water in the beaker look like?
Answer» Himanshu took red coloured hot water and blue coloured cold water and poured them into a beaker containing water at room temperature. How will the water in the beaker look like?

Discussion

1086.	5.Why does the lightning passes through even though air is a poor conductor of electrcity?
Answer» 5.Why does the lightning passes through even though air is a poor conductor of electrcity?

Discussion

1087.	Wheels are added to a trolley for smooth travel. What is the principle behind this?
Answer» Wheels are added to a trolley for smooth travel. What is the principle behind this?

Discussion

1088.	(x-1)^2.(x-2)^3.(x+1)^4.(x-3)/(x-4)^3
Answer» (x-1)^2.(x-2)^3.(x+1)^4.(x-3)/(x-4)^3<0 How to solve this inequality ?

Discussion

1089.	A block of mass m is placed on a smooth wedge of inclination θ .The whole system is accelerated horizontally so that the block does not slip on the wedge .The force exerted by the wedge on the block has a magnitude
Answer» A block of mass m is placed on a smooth wedge of inclination θ .The whole system is accelerated horizontally so that the block does not slip on the wedge .The force exerted by the wedge on the block has a magnitude

Discussion

1090.	What is charging by induction ?
Answer» What is charging by induction ?

Discussion

1091.	Which of the following objects do not experience any change in the orientation of their image through a pinhole camera?
Answer» Which of the following objects do not experience any change in the orientation of their image through a pinhole camera?

Discussion

1092.	If A={1,2}, then what is power set of A
Answer» If A={1,2}, then what is power set of A

Discussion

1093.	84.Six 1.1 v cells with internal resistance3 ohm each are connected in three parallel branches of two cells each if the resistance of external circuit is2 ohm then the c current in t is
Answer» 84.Six 1.1 v cells with internal resistance3 ohm each are connected in three parallel branches of two cells each if the resistance of external circuit is2 ohm then the c current in t is

Discussion

1094.	When does a man exert more pressure on the floor: while standing or while walking?
Answer» When does a man exert more pressure on the floor: while standing or while walking?

Discussion

1095.	If three objects of same mass are dropped from different heights h1, h2 & h3 such that h1 > h2 < h3, then which of the following is true about their corresponding potential energy (PE1, PE2 & PE3):
Answer» If three objects of same mass are dropped from different heights $h_{1}$ , $h_{2}$ & $h_{3}$ such that $h_{1}$ > $h_{2}$ < $h_{3}$ , then which of the following is true about their corresponding potential energy ( $P E_{1}$ , $P E_{2}$ & $P E_{3}$ ):

Discussion

1096.	Which of the following mirror always form virtual and diminished image irrespective of object's location?
Answer» Which of the following mirror always form virtual and diminished image irrespective of object's location?

Discussion

1097.	44. Two identical containers A and B with frictionless Pistons contains same ideal gas at the same temperature and same volume V . The gas in each cylinder is now allowed to expand isothermally to the final volume 2V . the changes in the pressure in A and B are found to be Δ p and 1.5Δ p respectively . If the mass of the gases in the containers A and B are respectively mA and mB , then find relation between mA and mB . Click here to view details:
Answer» 44. Two identical containers A and B with frictionless Pistons contains same ideal gas at the same temperature and same volume V . The gas in each cylinder is now allowed to expand isothermally to the final volume 2V . the changes in the pressure in A and B are found to be Δ p and 1.5Δ p respectively . If the mass of the gases in the containers A and B are respectively mA and mB , then find relation between mA and mB . Click here to view details:

Discussion

1098.	Atul came to know from his father that pole star is the only star in the sky that does not move as the night passes. But, his father did not tell him the reason. Can you help him?
Answer» Atul came to know from his father that pole star is the only star in the sky that does not move as the night passes. But, his father did not tell him the reason. Can you help him?

Discussion

1099.	According to galelio., he told that a person who is at rest, will remain at rest and a person in motion will remain in motion until some external force is applied. But if a person lying at rest on his bed wants to get up, he can easily do that and he walks off even though no extra external force was applied. How was he able to do so?
Answer» According to galelio., he told that a person who is at rest, will remain at rest and a person in motion will remain in motion until some external force is applied. But if a person lying at rest on his bed wants to get up, he can easily do that and he walks off even though no extra external force was applied. How was he able to do so?

Discussion

1100.	A standard vapour compression refrigeration cycle operating with a condensing tenperature of 35∘C and an evaporating temperature of −10∘C develops 15 kW of cooling). The P-h diagram shows the enthalpies at various states. If the isentropic efficiency of the compressor is 0.75, the magnitude of compressor power (in kW) is (correct to two decimal places)
Answer» A standard vapour compression refrigeration cycle operating with a condensing tenperature of $35^{\circ} C$ and an evaporating temperature of $- 10^{\circ} C$ develops $15 k W$ of cooling). The P-h diagram shows the enthalpies at various states. If the isentropic efficiency of the compressor is $0.75$ , the magnitude of compressor power (in kW) is (correct to two decimal places)

Discussion

Explore topic-wise InterviewSolutions in .

What is the difference between a tornado and a cyclone? [3 MARKS]

What is the difference between longitudinal and transverse wave?

How cyclones are formed in nature?

Question 10 (i) State whether the following statement is ‘True’ or ‘False’. The planet nearest to us is Jupiter.

Question 6Which of the following statements is incorrect?(a) Friction acts on a ball rolling along the ground.(b) Friction acts on a boat moving on water.(c) Friction acts on a bicycle moving on a smooth road.(d) Friction does not act on a ball moving through air.

Which of the following blocks will not experience any frictional force on application of external force(s) on it?

A uniform rope of length L is pulled by a constant force P as shown. The tension is the rope at a distance x from the end where the force is applied is

Why is the candle in the mirror not called an object?

25ml of an aquous solution of KCl was found to require 20ml of 1M AgNO3 solution for titration the depression in freezing point of KCl solution with 100% ionisation will be

Why does bubbles appears when liquid is heated

Which of the following is not a possible representation of magnetic field lines?

Two planets have radii r, and r, and densities dand d, respectively. The ratio of the accelerationdue to gravity on them will be(2) r,d,: r,d2(4) r,d?:r2d(1) r,d2: 2d,(3) rfd, rd2foce varies as r'

if the string of a conical pendulum makes an angle θ with horiontal,then square of its time period is proportional t

how can virtual plane mirror form an image

97.Two point charges separated by distance Delhi repel each other with a force 9N .If separation between them becomes 3d then force of repulsion will be

The process of transferring a charge from a charged body to the earth is called as ___ .

The coefficient of volume expansion of mercury is 20 times the coefficient of linear expansion of glass. Find the volume of mercury that must be poured into a glass vessel of volume V so that the volume above mercury may remain constant at all temperature

. A uniform string resonates with a tuning fork, at amaximum tension of 32 N. If it is divided into twosegments by placing a wedge at a distance one-fourth of length from one end, then to resonancewith same frequency the maximum value of tensionfor string will be(1) 2 N3) 8 N(2) 4 N(4) 16 N

Two planets have radii R1 and R2 and densities P1 and P2 respectively the ratio of the acceleration due to gravity at the surface is:-A) R1R2/P1P2B) R2squareP1/R1squareP2C)R1P1/R2P2

The earthquake occured at Bhuj and Kashmir created a lot of damage to life and property. Based on the impact created, can you guess the approximate magnitude of earthquakes on Richter scale?

The energy absorbed by each molecule (A) of asubstance is 4.4 x 10-19 J and bond energy permolecule is 4.0 x 10-19 J. The kinetic energy of themolecule per atom will be \lbrack AIPMT (Prelims)-2009\rbrack (1) 2.2 x 10-19 J (2) 2.0 x 10-19 J (3) 4.0 x 10-20J (4) 2.0 x 10-20

What is the difference between concave and convex mirror

ntFour charges +q,-q,+q,-q are placed in order on the four consecutive corners of a square of side 'L'. The work done in interchanging the position of two negighbouring charges of opposite sign isn ntn ntn

A sound source sends waves of 400 Hz. It produces waves of wavelength 2.5 m. The velocity of sound waves is:1000

Which is formed easily ? KCl or KI or KBr or CaBr2

34. Two isolated metallic spheres of radii 2 cm and4 cm are given equal charge, then the ratio ofcharge density on the surfaces of the spheres willbe

How does a air conditioner work?

A ray of light is incident at 60∘, on glass-air interface. Then the light ray will- Use : [μw = √2 , μa=1]

How can we become a scientist in NASA can you give guidelines pls which subject to choose pls tell

A body is being moved from rest along a straight line by a machine delivering constant power.the distance covered by the body in time &quott" is prportional to?

A beam of rectangular section 250 m wide and 500 mm effective depth is provided with 4 bars of 18 mm diameter as tensile steel of grade Fe250. The depth of neutral axis from the extreme compression fibre is _____ cm. [Use M20 concrete]12.3

D/dx of x to the power root xHow to solve this??

Himanshu took red coloured hot water and blue coloured cold water and poured them into a beaker containing water at room temperature. How will the water in the beaker look like?

5.Why does the lightning passes through even though air is a poor conductor of electrcity?

Wheels are added to a trolley for smooth travel. What is the principle behind this?

(x-1)^2.(x-2)^3.(x+1)^4.(x-3)/(x-4)^3

A block of mass m is placed on a smooth wedge of inclination θ .The whole system is accelerated horizontally so that the block does not slip on the wedge .The force exerted by the wedge on the block has a magnitude

What is charging by induction ?

Which of the following objects do not experience any change in the orientation of their image through a pinhole camera?

If A={1,2}, then what is power set of A

84.Six 1.1 v cells with internal resistance3 ohm each are connected in three parallel branches of two cells each if the resistance of external circuit is2 ohm then the c current in t is

When does a man exert more pressure on the floor: while standing or while walking?

If three objects of same mass are dropped from different heights h1, h2 &amp; h3 such that h1 &gt; h2 &lt; h3, then which of the following is true about their corresponding potential energy (PE1, PE2 &amp; PE3):

Which of the following mirror always form virtual and diminished image irrespective of object's location?

Atul came to know from his father that pole star is the only star in the sky that does not move as the night passes. But, his father did not tell him the reason. Can you help him?

If three objects of same mass are dropped from different heights h1, h2 & h3 such that h1 > h2 < h3, then which of the following is true about their corresponding potential energy (PE1, PE2 & PE3):