13232 + Interview Questions in Physics Page 2 InterviewSolution

51.	a particle of mass 1kg is moving along the line y=x+3 with speed 3m\s the magnitude of angular momentum of the particle about origin is
Answer» a particle of mass 1kg is moving along the line y=x+3 with speed 3m\s the magnitude of angular momentum of the particle about origin is

Discussion

52.	36.An object is projected with velocity 20 m/s if it's horizontal range is double the maximum height attained by it find the value (range)of the object
Answer» 36.An object is projected with velocity 20 m/s if it's horizontal range is double the maximum height attained by it find the value (range)of the object

Discussion

53.	A body is said to be in motion__.
Answer» A body is said to be in motion__.

Discussion

54.	57.On absorbing light of wavelength 3800A , bromine molecules undergoes dissociation and form atoms . the kinetic energy of one bromine atom assuming that one quantum of radiation is absorbed by each molecules would be/(bind energy of Br2=190kj/moo
Answer» 57.On absorbing light of wavelength 3800A , bromine molecules undergoes dissociation and form atoms . the kinetic energy of one bromine atom assuming that one quantum of radiation is absorbed by each molecules would be/(bind energy of Br2=190kj/moo

Discussion

55.	An athlete completes one round of a circular track of diameter 200m in 40 sec . What will be the distance covered
Answer» An athlete completes one round of a circular track of diameter 200m in 40 sec . What will be the distance covered

Discussion

56.	Which would require a greater force acceleration a 2kg mass at 5m/ss or a 4kg mass at 2m/ss
Answer» Which would require a greater force acceleration a 2kg mass at 5m/ss or a 4kg mass at 2m/ss

Discussion

57.	Which of the following correctly matches the part of a biogas plant with the process taking place in there?
Answer» Which of the following correctly matches the part of a biogas plant with the process taking place in there?

Discussion

58.	What is the difference between circular motion and periodic motion?
Answer» What is the difference between circular motion and periodic motion?

Discussion

59.	1.Complete magnetic sheilding is not possible. 2.A bar magnet's dipole moment can be always found out in the presence of an external field. Why are these two statements incorrect?
Answer» 1.Complete magnetic sheilding is not possible. 2.A bar magnet's dipole moment can be always found out in the presence of an external field. Why are these two statements incorrect?

Discussion

60.	Define the 'frequency' and 'time - period' of a wave. What is the relation between the two ?
Answer» Define the 'frequency' and 'time - period' of a wave. What is the relation between the two ?

Discussion

61.	A ball is dropped from top of a tower.the distance travelled by the ball in the last second is 40m. Find the height of the tower
Answer» A ball is dropped from top of a tower.the distance travelled by the ball in the last second is 40m. Find the height of the tower

Discussion

62.	A particle moves along the quadrant of a circle of radius 4 m from the point A toB with a constant speed 2 m/s for 1/4th of a circle, then then Average velocity of the particle would be
Answer» A particle moves along the quadrant of a circle of radius 4 m from the point A toB with a constant speed 2 m/s for 1/4th of a circle, then then Average velocity of the particle would be

Discussion

63.	AlF3 is soluble in HF only in the presence of KF. It is due to the formation of:
Answer» $A l F_{3}$ is soluble in $H F$ only in the presence of $K F$ . It is due to the formation of:

Discussion

64.	I have a container that is 20 cm tall and filled fully with water. The lift accelerates up at 10 m/s2. What is the pressure difference between the top surface of the water and the bottom of the container? Take density of water as 1 kg/lit and acceleration due to gravity g = 10 m/s2
Answer» I have a container that is $20 c m$ tall and filled fully with water. The lift accelerates up at $10 m / s^{2}$ . What is the pressure difference between the top surface of the water and the bottom of the container? Take density of water as $1 k g / l i t$ and acceleration due to gravity $g$ = $10 m / s^{2}$

Discussion

65.	Draw a neat labelled diagram of a vernier callipers. Name its main parts and state their functions.
Answer» Draw a neat labelled diagram of a vernier callipers. Name its main parts and state their functions.

Discussion

66.	Figure shows a large frictionless sphere of radius R. The sphere us fixed on the ground. A mass m begins to slide on the sphere from the top of it. Height from the ground where the object leaves contact with the sphere is
Answer» Figure shows a large frictionless sphere of radius R. The sphere us fixed on the ground. A mass m begins to slide on the sphere from the top of it. Height from the ground where the object leaves contact with the sphere is

Discussion

67.	rectangular mild steel flat 150 mm wide and 12mm thick carry tensile load of 180 kilonewton at an Accentricity of 10mm in plane bisecting the thickness find maximum and minimum intensity of stress
Answer» rectangular mild steel flat 150 mm wide and 12mm thick carry tensile load of 180 kilonewton at an Accentricity of 10mm in plane bisecting the thickness find maximum and minimum intensity of stress

Discussion

68.	For a moving particle, what does a decrease in displacement with time indicate?
Answer» For a moving particle, what does a decrease in displacement with time indicate?

Discussion

69.	If r represents the radius of the orbit of the satellite of mass m moving around planet of mass M, the velocity v of the satellite is given by
Answer» If r represents the radius of the orbit of the satellite of mass m moving around planet of mass M, the velocity v of the satellite is given by

Discussion

70.	Liquids generally have lower density as compare to solids but you must have observed that ice floats on water find find out why?explain it briefly and in very easier manner
Answer» Liquids generally have lower density as compare to solids but you must have observed that ice floats on water find find out why?explain it briefly and in very easier manner

Discussion

71.	What is the effective density (ρ) of the mixture of water and milk where both are having same masses of 1 kg.
Answer» What is the effective density ( $ρ$ ) of the mixture of water and milk where both are having same masses of 1 $k g$ .

Discussion

72.	गाँववालों ने उपवास क्यों रखा और उसे कब तोड़ा? दोनों प्रसंगों को स्पष्ट कीजिए।
Answer» गाँववालों ने उपवास क्यों रखा और उसे कब तोड़ा? दोनों प्रसंगों को स्पष्ट कीजिए।

Discussion

73.	A body of mass m starts from rest, and attains a final velocity of v m s−1 in a duration of t, with uniform acceleration. If the net force acting on the bus is given by F, then:
Answer» A body of mass $m$ starts from rest, and attains a final velocity of ${v m s}^{- 1}$ in a duration of $t$ , with uniform acceleration. If the net force acting on the bus is given by $F$ , then:

Discussion

74.	Explain the dimensional analysis in detail
Answer» Explain the dimensional analysis in detail

Discussion

75.	The wavelength of a sound in a medium is 50 cm. If wave velocity is 25 ms−1, then what is the time period?
Answer» The wavelength of a sound in a medium is $50 c m$ . If wave velocity is $25 m s^{- 1}$ , then what is the time period?

Discussion

76.	Identify the part which vibrates to produce sound in the following instruments.1. Dholak2. Sitar3. Flute
Answer» Identify the part which vibrates to produce sound in the following instruments. 1. Dholak 2. Sitar 3. Flute

Discussion

77.	The radius of curvature of each type of biconcave lens, made of glass of refractive index 1.5 is 30cm . Calculate the focal length of lens in the airs?
Answer» The radius of curvature of each type of biconcave lens, made of glass of refractive index 1.5 is 30cm . Calculate the focal length of lens in the airs?

Discussion

78.	3.How to calculate the time period when the distance of the earth doubled but the radius remain same
Answer» 3.How to calculate the time period when the distance of the earth doubled but the radius remain same

Discussion

79.	Nora spent 15 of her day doing home work and 15 of the day watching football. What part of the day was left to do other things?
Answer» Nora spent $\frac{1}{5}$ of her day doing home work and $\frac{1}{5}$ of the day watching football. What part of the day was left to do other things?

Discussion

80.	Milli equivalent of 10ml h2s04 whose specific gravity is 1.2 and it is 49 percent by weight
Answer» Milli equivalent of 10ml h2s04 whose specific gravity is 1.2 and it is 49 percent by weight

Discussion

81.	What is the rate of change of velocity called?
Answer» What is the rate of change of velocity called?

Discussion

82.	3. A car, initially at rest, moves with uniform acceleration and hence acquires a speed of 72km/h in 10 seconds. The given graphs show possible velocity-time(v-t), displacement-time(s-t) and velocity-displacement(v-s) curves for this motion. Which of the following graphs correctly represent the motion of the car? (A) (i) and (ii) only (B) (ii) and (iii) only (C) (i) and (iii) only (D) (i), (ii) and (iii) Click here to view details:
Answer» 3. A car, initially at rest, moves with uniform acceleration and hence acquires a speed of 72km/h in 10 seconds. The given graphs show possible velocity-time(v-t), displacement-time(s-t) and velocity-displacement(v-s) curves for this motion. Which of the following graphs correctly represent the motion of the car? (A) (i) and (ii) only (B) (ii) and (iii) only (C) (i) and (iii) only (D) (i), (ii) and (iii) Click here to view details:

Discussion

83.	Suppose two bodies of mass 2 kg and 10 kg are placed on a frictionless surface. The force required to move either of them is same. Does that mean both bodies have same inertia? Give reasons.
Answer» Suppose two bodies of mass 2 kg and 10 kg are placed on a frictionless surface. The force required to move either of them is same. Does that mean both bodies have same inertia? Give reasons.

Discussion

84.	Two objects,A and B are of mass M and 2M with velocity V,V/2 respectively. Which one will have greater inertia and greater momentum.
Answer» Two objects,A and B are of mass M and 2M with velocity V,V/2 respectively. Which one will have greater inertia and greater momentum.

Discussion

85.	Find the relative density of a substance having a density of 3000 kg/m3. (Take density of water = 1000 kg/m3)
Answer» Find the relative density of a substance having a density of $3000 {kg/m}^{3}$ . (Take density of water = $1000 {kg/m}^{3}$ )

Discussion

86.	Graph between speed of sound and pressure of gas would be
Answer» Graph between speed of sound and pressure of gas would be

Discussion

87.	Question 9 A body is falling from a height h, after it has fallen a height h2, it will possess (a) only potential energy (b) only kinetic energy (c) half potential and half kinetic energy (d) more kinetic and less potential energy
Answer» Question 9 A body is falling from a height h, after it has fallen a height $\frac{h}{2}$ , it will possess (a) only potential energy (b) only kinetic energy (c) half potential and half kinetic energy (d) more kinetic and less potential energy

Discussion

88.	Why magnetic lorentz force cannot change the kinetic energy and speed of the particle but changes its velocity and momentum?
Answer» Why magnetic lorentz force cannot change the kinetic energy and speed of the particle but changes its velocity and momentum?

Discussion

89.	If work is done at a faster rate, then
Answer» If work is done at a faster rate, then

Discussion

90.	What is the SI unit of temperature?
Answer» What is the SI unit of temperature?

Discussion

91.	The two ends of a train moving with uniform acceleration pass a certain point with velocity u and v.Find the velocity with which the middle point of the train passes the same point.
Answer» The two ends of a train moving with uniform acceleration pass a certain point with velocity u and v.Find the velocity with which the middle point of the train passes the same point.

Discussion

92.	For a body performing motion with uniform speed, the distance-time graph is:
Answer» For a body performing motion with uniform speed, the distance-time graph is:

Discussion

93.	Is an optical medium always comprised of matter?
Answer» Is an optical medium always comprised of matter?

Discussion

94.	What is projectile?
Answer» What is projectile?

Discussion

95.	The coating used on raincoats is waterproof because ___.
Answer» The coating used on raincoats is waterproof because ___.

Discussion

96.	(a) Write the formula for acceleration. Give the meaning of each symbol which occurs in it. (b) A train starting from railwaystation attains a speed of 21 ms in one minute. Find its acceleration.
Answer» (a) Write the formula for acceleration. Give the meaning of each symbol which occurs in it. (b) A train starting from railwaystation attains a speed of 21 $\frac{m}{s}$ in one minute. Find its acceleration.

96.

(a) Write the formula for acceleration. Give the meaning of each symbol which occurs in it. (b) A train starting from railwaystation attains a speed of 21 ms in one minute. Find its acceleration.

Answer»

(a) Write the formula for acceleration. Give the meaning of each symbol which occurs in it.

(b) A train starting from railwaystation attains a speed of 21 $\frac{m}{s}$ in one minute. Find its acceleration.

Discussion

97.	.Two cars A and B are approaching each other head-on with speeds 20 m/s and 10 m/s respectively.When their separation is X then A and B start braking at 4 m/s ^2and 2m/s^2 respectively. Minimumvalue of X to avoid collision is(1) 60 m(3) 80 m(2) 75 m(4) 90 m
Answer» .Two cars A and B are approaching each other head-on with speeds 20 m/s and 10 m/s respectively.When their separation is X then A and B start braking at 4 m/s ^2and 2m/s^2 respectively. Minimumvalue of X to avoid collision is(1) 60 m(3) 80 m(2) 75 m(4) 90 m

Discussion

98.	In Figure, time and distance graph of a linear motion is given. Two positions of time and distance are recorded as, when T=0,D=2 and when T=3,D=8. Using the concept of slope, find law of motion, i.e., how distance depends upon time.
Answer» In Figure, time and distance graph of a linear motion is given. Two positions of time and distance are recorded as, when $T = 0, D = 2$ and when $T = 3, D = 8.$ Using the concept of slope, find law of motion, i.e., how distance depends upon time.

Discussion

99.	Question 10Imagine that you are sitting in a chamber with your back to one wall. An electron beam, moving horizontally from back wall towards the front wall, is deflected by a strong magnetic field to your right side. What is the direction of magnetic field?
Answer» Question 10 Imagine that you are sitting in a chamber with your back to one wall. An electron beam, moving horizontally from back wall towards the front wall, is deflected by a strong magnetic field to your right side. What is the direction of magnetic field?

Discussion

100.	Name the scientist who gave the magnitude of buoyant force acting on a solid object immersed in a liquid.
Answer» Name the scientist who gave the magnitude of buoyant force acting on a solid object immersed in a liquid.

Discussion

Explore topic-wise InterviewSolutions in .

a particle of mass 1kg is moving along the line y=x+3 with speed 3m\s the magnitude of angular momentum of the particle about origin is

36.An object is projected with velocity 20 m/s if it's horizontal range is double the maximum height attained by it find the value (range)of the object

A body is said to be in motion__.

57.On absorbing light of wavelength 3800A , bromine molecules undergoes dissociation and form atoms . the kinetic energy of one bromine atom assuming that one quantum of radiation is absorbed by each molecules would be/(bind energy of Br2=190kj/moo

An athlete completes one round of a circular track of diameter 200m in 40 sec . What will be the distance covered

Which would require a greater force acceleration a 2kg mass at 5m/s*s or a 4kg mass at 2m/s*s

Which of the following correctly matches the part of a biogas plant with the process taking place in there?

What is the difference between circular motion and periodic motion?

1.Complete magnetic sheilding is not possible. 2.A bar magnet's dipole moment can be always found out in the presence of an external field. Why are these two statements incorrect?

Define the 'frequency' and 'time - period' of a wave. What is the relation between the two ?

A ball is dropped from top of a tower.the distance travelled by the ball in the last second is 40m. Find the height of the tower

A particle moves along the quadrant of a circle of radius 4 m from the point A toB with a constant speed 2 m/s for 1/4th of a circle, then then Average velocity of the particle would be

AlF3 is soluble in HF only in the presence of KF. It is due to the formation of:

I have a container that is 20 cm tall and filled fully with water. The lift accelerates up at 10 m/s2. What is the pressure difference between the top surface of the water and the bottom of the container? Take density of water as 1 kg/lit and acceleration due to gravity g = 10 m/s2

Draw a neat labelled diagram of a vernier callipers. Name its main parts and state their functions.

Figure shows a large frictionless sphere of radius R. The sphere us fixed on the ground. A mass m begins to slide on the sphere from the top of it. Height from the ground where the object leaves contact with the sphere is

rectangular mild steel flat 150 mm wide and 12mm thick carry tensile load of 180 kilonewton at an Accentricity of 10mm in plane bisecting the thickness find maximum and minimum intensity of stress

For a moving particle, what does a decrease in displacement with time indicate?

If r represents the radius of the orbit of the satellite of mass m moving around planet of mass M, the velocity v of the satellite is given by

Liquids generally have lower density as compare to solids but you must have observed that ice floats on water find find out why?explain it briefly and in very easier manner

What is the effective density (ρ) of the mixture of water and milk where both are having same masses of 1 kg.

गाँववालों ने उपवास क्यों रखा और उसे कब तोड़ा? दोनों प्रसंगों को स्पष्ट कीजिए।

A body of mass m starts from rest, and attains a final velocity of v m s−1 in a duration of t, with uniform acceleration. If the net force acting on the bus is given by F, then:

Explain the dimensional analysis in detail

The wavelength of a sound in a medium is 50 cm. If wave velocity is 25 ms−1, then what is the time period?

Identify the part which vibrates to produce sound in the following instruments.1. Dholak2. Sitar3. Flute

The radius of curvature of each type of biconcave lens, made of glass of refractive index 1.5 is 30cm . Calculate the focal length of lens in the airs?

3.How to calculate the time period when the distance of the earth doubled but the radius remain same

Nora spent 15 of her day doing home work and 15 of the day watching football. What part of the day was left to do other things?

Milli equivalent of 10ml h2s04 whose specific gravity is 1.2 and it is 49 percent by weight

What is the rate of change of velocity called?

Suppose two bodies of mass 2 kg and 10 kg are placed on a frictionless surface. The force required to move either of them is same. Does that mean both bodies have same inertia? Give reasons.

Two objects,A and B are of mass M and 2M with velocity V,V/2 respectively. Which one will have greater inertia and greater momentum.

Find the relative density of a substance having a density of 3000 kg/m3. (Take density of water = 1000 kg/m3)

Graph between speed of sound and pressure of gas would be

Question 9 A body is falling from a height h, after it has fallen a height h2, it will possess (a) only potential energy (b) only kinetic energy (c) half potential and half kinetic energy (d) more kinetic and less potential energy

Why magnetic lorentz force cannot change the kinetic energy and speed of the particle but changes its velocity and momentum?

If work is done at a faster rate, then

What is the SI unit of temperature?

The two ends of a train moving with uniform acceleration pass a certain point with velocity u and v.Find the velocity with which the middle point of the train passes the same point.

For a body performing motion with uniform speed, the distance-time graph is:

Is an optical medium always comprised of matter?

What is projectile?

The coating used on raincoats is waterproof because ___.

(a) Write the formula for acceleration. Give the meaning of each symbol which occurs in it. (b) A train starting from railwaystation attains a speed of 21 ms in one minute. Find its acceleration.

.Two cars A and B are approaching each other head-on with speeds 20 m/s and 10 m/s respectively.When their separation is X then A and B start braking at 4 m/s ^2and 2m/s^2 respectively. Minimumvalue of X to avoid collision is(1) 60 m(3) 80 m(2) 75 m(4) 90 m

In Figure, time and distance graph of a linear motion is given. Two positions of time and distance are recorded as, when T=0,D=2 and when T=3,D=8. Using the concept of slope, find law of motion, i.e., how distance depends upon time.

Question 10Imagine that you are sitting in a chamber with your back to one wall. An electron beam, moving horizontally from back wall towards the front wall, is deflected by a strong magnetic field to your right side. What is the direction of magnetic field?

Name the scientist who gave the magnitude of buoyant force acting on a solid object immersed in a liquid.

Which would require a greater force acceleration a 2kg mass at 5m/ss or a 4kg mass at 2m/ss