13232 + Interview Questions in Physics Page 172 InterviewSolution

8551.	What is meant by acceleration due to gravity? Explain the variation in its value when an object moves from poles to the equator of Earth. what effect will this variation have on the weight of a mass of 300kg on poles at equator?
Answer» What is meant by acceleration due to gravity? Explain the variation in its value when an object moves from poles to the equator of Earth. what effect will this variation have on the weight of a mass of 300kg on poles at equator?

Discussion

8552.	Give an example when Fscostheta=1 and when Fscostheta=0
Answer» Give an example when Fscostheta=1 and when Fscostheta=0

Discussion

8553.	Which of the following is used in automobile radiators?.
Answer» Which of the following is used in automobile radiators?.

Discussion

8554.	Give 10 examples of isotonic solutions in real life.
Answer» Give 10 examples of isotonic solutions in real life.

Discussion

8555.	Which of the following statement best describes frequency ? (a) the maximum disturbance caused by a wave (b) the number of complete vibrations per second (c) the distance between one crest of a wave and the next one (d) the distance travelled by a wave per second
Answer» Which of the following statement best describes frequency ? (a) the maximum disturbance caused by a wave (b) the number of complete vibrations per second (c) the distance between one crest of a wave and the next one (d) the distance travelled by a wave per second

8555.

Which of the following statement best describes frequency ? (a) the maximum disturbance caused by a wave (b) the number of complete vibrations per second (c) the distance between one crest of a wave and the next one (d) the distance travelled by a wave per second

Answer»

Which of the following statement best describes frequency ?

(a) the maximum disturbance caused by a wave

(b) the number of complete vibrations per second

(c) the distance between one crest of a wave and the next one

(d) the distance travelled by a wave per second

Discussion

8556.	What will happen to the density of a body if its mass is doubled?
Answer» What will happen to the density of a body if its mass is doubled?

Discussion

8557.	Through which of the following materials can sound travel ? wood, air, water, steam, ice, hydrogen, steel, diamond.
Answer» Through which of the following materials can sound travel ? wood, air, water, steam, ice, hydrogen, steel, diamond.

8557.

Through which of the following materials can sound travel ? wood, air, water, steam, ice, hydrogen, steel, diamond.

Answer»

Through which of the following materials can sound travel ?

wood, air, water, steam, ice, hydrogen, steel, diamond.

Discussion

8558.	An athlete runs some distance before making a long jump to
Answer» An athlete runs some distance before making a long jump to

Discussion

8559.	Why there is gravitational force between any two bodies?
Answer» Why there is gravitational force between any two bodies?

Discussion

8560.	which of the two velocity or accelaration, gives the direction of motion of the body. justify your answerwith an example.
Answer» which of the two velocity or accelaration, gives the direction of motion of the body. justify your answerwith an example.

Discussion

8561.	According to Archimedes principle, what makes a body float in a liquid?
Answer» According to Archimedes principle, what makes a body float in a liquid?

Discussion

8562.	1m/sec = ____ km/h
Answer» 1m/sec = ____ km/h

Discussion

8563.	A truck has a mass of 10000 kgs, a car has a mass of 900 kgs, a bike has a mass of 100 kgs and a bicycle has a mass of 16kgs. All of them are moving at the same speed on a road. Then the kinetic energy will be more for the___.
Answer» A truck has a mass of 10000 kgs, a car has a mass of 900 kgs, a bike has a mass of 100 kgs and a bicycle has a mass of 16kgs. All of them are moving at the same speed on a road. Then the kinetic energy will be more for the___.

Discussion

8564.	Which of the following produces magnetic field as well as respond to external magnetic field?
Answer» Which of the following produces magnetic field as well as respond to external magnetic field?

Discussion

8565.	Name the nerve which carries electrical impulses from the cochlea of ear to the brain.
Answer» Name the nerve which carries electrical impulses from the cochlea of ear to the brain.

Discussion

8566.	The coefficient of static friction between the two blocks shown in figure is μ and the table is smooth. What maximum horizontal force F can be applied to the block of mass M so that the blocks move together?
Answer» The coefficient of static friction between the two blocks shown in figure is $μ$ and the table is smooth. What maximum horizontal force F can be applied to the block of mass M so that the blocks move together?

8566.

The coefficient of static friction between the two blocks shown in figure is μ and the table is smooth. What maximum horizontal force F can be applied to the block of mass M so that the blocks move together?

Answer»

The coefficient of static friction between the two blocks shown in figure is $μ$ and the table is smooth. What maximum horizontal force F can be applied to the block of mass M so that the blocks move together?

Discussion

8567.	Which of the following instruments can only draw straight lines?
Answer» Which of the following instruments can only draw straight lines?

Discussion

8568.	Cathode rays consist of
Answer» Cathode rays consist of

Discussion

8569.	Describe the effect of force acting upon an object when the mechanical pull of a bike is less than the frictional force
Answer» Describe the effect of force acting upon an object when the mechanical pull of a bike is less than the frictional force

Discussion

8570.	1. Define acceleration due to gravity. 2. Calculate the value of acceleration due to gravity on the surface of the moon. (Given: Mass of the moon =7.4×1022 kg; Radius of the moon =1740 km; G=6.7×10−11 Nm2kg−2)
Answer» 1. Define acceleration due to gravity. 2. Calculate the value of acceleration due to gravity on the surface of the moon. (Given: Mass of the moon $= 7.4 \times 10^{22} k g$ ; Radius of the moon = $1740 k m$ ; $G = 6.7 \times 10^{- 11} N m^{2} k g^{- 2}$ )

Discussion

8571.	Anjali swims ina 90m long pool she covers 180m in one minute by swimming from one end to the other and back along the same straight path find the average speed and average velocity of Anjali
Answer» Anjali swims ina 90m long pool she covers 180m in one minute by swimming from one end to the other and back along the same straight path find the average speed and average velocity of Anjali

Discussion

8572.	Question 11 A full length image of a distant tall building can definitely be seen by using (a) a concave mirror (b) a convex mirror (c) a plane mirror (d) both concave as well as plane mirror
Answer» Question 11 A full length image of a distant tall building can definitely be seen by using (a) a concave mirror (b) a convex mirror (c) a plane mirror (d) both concave as well as plane mirror

Discussion

8573.	A car of mass 1000 kg travelling at 12 m/sec dashed into rear of bus of mass 2000 kg moving in same direction at 8 m/ sec . The car bounces backwards after collision with a speed of 9 m / sec. What is the recoil velocity of gun.
Answer» A car of mass 1000 kg travelling at 12 m/sec dashed into rear of bus of mass 2000 kg moving in same direction at 8 m/ sec . The car bounces backwards after collision with a speed of 9 m / sec. What is the recoil velocity of gun.

Discussion

8574.	Aashna swims in a 70 m long pool. She covers 140 m in one minute by swimming from one end to the other end and back along the same straight path. Find the average speed and average velocity of Aashna.
Answer» Aashna swims in a 70 m long pool. She covers 140 m in one minute by swimming from one end to the other end and back along the same straight path. Find the average speed and average velocity of Aashna.

Discussion

8575.	Ball is thrown vertically upwards with a velocity 49m/s .Calculate 1)the maximum height to which it rises 2)the total time it takes to return to the surface of the earth
Answer» Ball is thrown vertically upwards with a velocity 49m/s .Calculate 1)the maximum height to which it rises 2)the total time it takes to return to the surface of the earth

Discussion

8576.	Electromangets are made up of : (a) steel (b) copper (c) soft iron (d) aluminium
Answer» Electromangets are made up of : (a) steel (b) copper (c) soft iron (d) aluminium

8576.

Electromangets are made up of : (a) steel (b) copper (c) soft iron (d) aluminium

Answer»

Electromangets are made up of :

(a) steel (b) copper

(c) soft iron (d) aluminium

Discussion

8577.	The SI unit of force is ___ .
Answer» The SI unit of force is ___ .

Discussion

8578.	A plane has a take-off speed of 120 ms and it reaches that speed after covering 2400 m. Determine the acceleration of the plane (assuming it to be constant) and the time required to reach this speed.
Answer» A plane has a take-off speed of 120 $\frac{m}{s}$ and it reaches that speed after covering 2400 m. Determine the acceleration of the plane (assuming it to be constant) and the time required to reach this speed.

Discussion

8579.	Why is our weight zero when going down in a lift?
Answer» Why is our weight zero when going down in a lift?

Discussion

8580.	Two balls A and B, of masses m and 2m are in motion with velocities 2v and v respectively. Compare the force needed to stop them in the same time.
Answer» Two balls A and B, of masses m and 2m are in motion with velocities 2v and v respectively. Compare the force needed to stop them in the same time.

Discussion

8581.	A 1,000 kg car moving at a speed of 20 m s–1 is brought to rest in a distance of 50 m. Calculate the net force acting on the car.
Answer» A 1,000 kg car moving at a speed of 20 m s^–1 is brought to rest in a distance of 50 m. Calculate the net force acting on the car.

Discussion

8582.	Which of the following physical quantities is not a scalar?
Answer» Which of the following physical quantities is not a scalar?

Discussion

8583.	A stone resting on the ground and has gravitation of 20 Newton acting on it. What is the weight and what is the mass of the stone?
Answer» A stone resting on the ground and has gravitation of 20 Newton acting on it. What is the weight and what is the mass of the stone?

Discussion

8584.	Two balls A and B of masses m and 2m are in motion with velocities 2v and v respectively. Compare : (i) their inertia, (ii) their momentum, and (iii) the force needed to stop them in the same time.
Answer» Two balls A and B of masses m and 2m are in motion with velocities 2v and v respectively. Compare : (i) their inertia, (ii) their momentum, and (iii) the force needed to stop them in the same time.

Discussion

8585.	A gun of mass 3 kg fires a bullet of mass 30 g. The bullet takes 0.003 s to move through the barrel of the gun and acquires a velocity of 100 m/s. Calculate the velocity by which the gun recoils.
Answer» A gun of mass 3 kg fires a bullet of mass 30 g. The bullet takes 0.003 s to move through the barrel of the gun and acquires a velocity of 100 m/s. Calculate the velocity by which the gun recoils.

Discussion

8586.	An object is placed far away from all the objects that can exert force on it. A frame of reference is constructed by taking the origin and axes is fixed in this object. Will the frame be necessarily inertial?
Answer» An object is placed far away from all the objects that can exert force on it. A frame of reference is constructed by taking the origin and axes is fixed in this object. Will the frame be necessarily inertial?

Discussion

8587.	What is the actual shape of the orbit of a planet around the sun? What assumption was made by Newton regarding the shape of an orbit of a planet around the sun for deriving his inverse square rule from Kepler's third law of planetary motion?
Answer» What is the actual shape of the orbit of a planet around the sun? What assumption was made by Newton regarding the shape of an orbit of a planet around the sun for deriving his inverse square rule from Kepler's third law of planetary motion?

8587.

What is the actual shape of the orbit of a planet around the sun? What assumption was made by Newton regarding the shape of an orbit of a planet around the sun for deriving his inverse square rule from Kepler's third law of planetary motion?

Answer»

What is the actual shape of the orbit of a planet around the sun? What assumption was made by Newton regarding the shape of an orbit of a planet around the sun for deriving his inverse square rule from Kepler's third law of planetary motion?

Discussion

8588.	When a boy suppose me is whirling a stone tied with a string while he is sitting on a bench.........then everyone who passes from there will say what about the boy -- in motion / rest??
Answer» When a boy suppose me is whirling a stone tied with a string while he is sitting on a bench.........then everyone who passes from there will say what about the boy -- in motion / rest??

Discussion

8589.	When a fireman directs a powerful stream of water from a hose-pipe, the hose-pipe tends to go backward. This is due to:
Answer» When a fireman directs a powerful stream of water from a hose-pipe, the hose-pipe tends to go backward. This is due to:

Discussion

8590.	What is retardation. Give two examples?
Answer» What is retardation. Give two examples?

Discussion

8591.	communication satellite moves in the orbit of radius 44400 km around the earth. the acceleration of such a satellite assuming that the only force acting on it is that due to the earth is A)0.4 mps B)0.6mps C)0.2mps D)0.1mps
Answer» communication satellite moves in the orbit of radius 44400 km around the earth. the acceleration of such a satellite assuming that the only force acting on it is that due to the earth is A)0.4 mps B)0.6mps C)0.2mps D)0.1mps

8591.

communication satellite moves in the orbit of radius 44400 km around the earth. the acceleration of such a satellite assuming that the only force acting on it is that due to the earth is A)0.4 mps B)0.6mps C)0.2mps D)0.1mps

Answer»

communication satellite moves in the orbit of radius 44400 km around the earth. the acceleration of such a satellite assuming that the only force acting on it is that due to the earth is

A)0.4 mps

B)0.6mps

C)0.2mps

D)0.1mps

Discussion

8592.	What is 0^0
Answer» What is 0^0

Discussion

8593.	The size of a bacteria is 1 μ. Find the number of bacteria in 1 m length.
Answer» The size of a bacteria is 1 $μ$ . Find the number of bacteria in 1 m length.

Discussion

8594.	A bullet of mass 10 gram travelling horizontally with a velocity of 150 metre per second strikes a stationary wooden block and comes to rest in 0.03 second. Calculate the distance of penetration of the bullet into the block. Also calculate the magnitude of the force exerted buy the wooden block on the bullet.
Answer» A bullet of mass 10 gram travelling horizontally with a velocity of 150 metre per second strikes a stationary wooden block and comes to rest in 0.03 second. Calculate the distance of penetration of the bullet into the block. Also calculate the magnitude of the force exerted buy the wooden block on the bullet.

Discussion

8595.	A Particle with a velocity of 7 m/s at t=0 moves along a stright line with a constant acceleration of 0.3 m/s2.Find the displacement of the particle in 10 secs ?
Answer» A Particle with a velocity of 7 m/s at t=0 moves along a stright line with a constant acceleration of 0.3 m/s2.Find the displacement of the particle in 10 secs ?

Discussion

8596.	Water is a _______ of electricity because it does not form ions.
Answer» Water is a _______ of electricity because it does not form ions.

Discussion

8597.	We know that If a ball of mass 1 kg is kept at a height 10 m possesses potential energy 'mgh' i.e. (1×10×10)=100 J. (Take earth surface as the reference, where m = mass of the object, g = acceleration due to gravity, h = height of the object from the earth's surface) What will be the kinetic energy of the ball when the ball is allowed to freely fall from a height 10m from the surface of the earth and hits the ground? (Take g=10ms2 and neglect air drag)
Answer» We know that If a ball of mass 1 kg is kept at a height 10 m possesses potential energy 'mgh' i.e. $(1 \times 10 \times 10) = 100$ J. (Take earth surface as the reference, where m = mass of the object, g = acceleration due to gravity, h = height of the object from the earth's surface) What will be the kinetic energy of the ball when the ball is allowed to freely fall from a height 10m from the surface of the earth and hits the ground? (Take $g = 10 \frac{m}{s^{2}}$ and neglect air drag)

8597.

We know that If a ball of mass 1 kg is kept at a height 10 m possesses potential energy 'mgh' i.e. (1×10×10)=100 J. (Take earth surface as the reference, where m = mass of the object, g = acceleration due to gravity, h = height of the object from the earth's surface) What will be the kinetic energy of the ball when the ball is allowed to freely fall from a height 10m from the surface of the earth and hits the ground? (Take g=10ms2 and neglect air drag)

Answer»

We know that If a ball of mass 1 kg is kept at a height 10 m possesses potential energy 'mgh' i.e. $(1 \times 10 \times 10) = 100$ J.

(Take earth surface as the reference, where m = mass of the object, g = acceleration due to gravity, h = height of the object from the earth's surface)
What will be the kinetic energy of the ball when the ball is allowed to freely fall from a height 10m from the surface of the earth and hits the ground?
(Take $g = 10 \frac{m}{s^{2}}$ and neglect air drag)

Discussion

8598.	Take a piece of thick wire bent in the form of a loop. It is passed at two points P and Q through horizontal cardboard as shown. The iron filings are sprinkled on the cardboard and current is allowed to flow through the battery. The observation(s) in the following experiment is\are
Answer» Take a piece of thick wire bent in the form of a loop. It is passed at two points P and Q through horizontal cardboard as shown. The iron filings are sprinkled on the cardboard and current is allowed to flow through the battery. The observation(s) in the following experiment is\are

8598.

Take a piece of thick wire bent in the form of a loop. It is passed at two points P and Q through horizontal cardboard as shown. The iron filings are sprinkled on the cardboard and current is allowed to flow through the battery. The observation(s) in the following experiment is\are

Answer»

Take a piece of thick wire bent in the form of a loop. It is passed at two points P and Q through horizontal cardboard as shown. The iron filings are sprinkled on the cardboard and current is allowed to flow through the battery. The observation(s) in the following experiment is\are

Discussion

8599.	What is capillarity? Please try to explain it by a video sir, please?
Answer» What is capillarity? Please try to explain it by a video sir, please?

Discussion

8600.	Name the unit of physical quantity obtained by the formula 2K / v*v Where K is kinetic energy v is linear velocity
Answer» Name the unit of physical quantity obtained by the formula 2K / v*v Where K is kinetic energy v is linear velocity

8600.

Name the unit of physical quantity obtained by the formula 2K / v*v Where K is kinetic energy v is linear velocity

Answer»

Name the unit of physical quantity obtained by the formula

2K / v*v

Where K is kinetic energy v is linear velocity

Discussion

Explore topic-wise InterviewSolutions in .

What is meant by acceleration due to gravity? Explain the variation in its value when an object moves from poles to the equator of Earth. what effect will this variation have on the weight of a mass of 300kg on poles at equator?

Give an example when Fscostheta=1 and when Fscostheta=0

Which of the following is used in automobile radiators?.

Give 10 examples of isotonic solutions in real life.

Which of the following statement best describes frequency ? (a) the maximum disturbance caused by a wave (b) the number of complete vibrations per second (c) the distance between one crest of a wave and the next one (d) the distance travelled by a wave per second

What will happen to the density of a body if its mass is doubled?

Through which of the following materials can sound travel ? wood, air, water, steam, ice, hydrogen, steel, diamond.

An athlete runs some distance before making a long jump to

Why there is gravitational force between any two bodies?

which of the two velocity or accelaration, gives the direction of motion of the body. justify your answerwith an example.

According to Archimedes principle, what makes a body float in a liquid?

1m/sec = ____ km/h

A truck has a mass of 10000 kgs, a car has a mass of 900 kgs, a bike has a mass of 100 kgs and a bicycle has a mass of 16kgs. All of them are moving at the same speed on a road. Then the kinetic energy will be more for the___.

Which of the following produces magnetic field as well as respond to external magnetic field?

Name the nerve which carries electrical impulses from the cochlea of ear to the brain.

The coefficient of static friction between the two blocks shown in figure is μ and the table is smooth. What maximum horizontal force F can be applied to the block of mass M so that the blocks move together?

Which of the following instruments can only draw straight lines?

Cathode rays consist of

Describe the effect of force acting upon an object when the mechanical pull of a bike is less than the frictional force

1. Define acceleration due to gravity. 2. Calculate the value of acceleration due to gravity on the surface of the moon. (Given: Mass of the moon =7.4×1022 kg; Radius of the moon =1740 km; G=6.7×10−11 Nm2kg−2)

Anjali swims ina 90m long pool she covers 180m in one minute by swimming from one end to the other and back along the same straight path find the average speed and average velocity of Anjali

Question 11 A full length image of a distant tall building can definitely be seen by using (a) a concave mirror (b) a convex mirror (c) a plane mirror (d) both concave as well as plane mirror

A car of mass 1000 kg travelling at 12 m/sec dashed into rear of bus of mass 2000 kg moving in same direction at 8 m/ sec . The car bounces backwards after collision with a speed of 9 m / sec. What is the recoil velocity of gun.

Aashna swims in a 70 m long pool. She covers 140 m in one minute by swimming from one end to the other end and back along the same straight path. Find the average speed and average velocity of Aashna.

Ball is thrown vertically upwards with a velocity 49m/s .Calculate 1)the maximum height to which it rises 2)the total time it takes to return to the surface of the earth

Electromangets are made up of : (a) steel (b) copper (c) soft iron (d) aluminium

The SI unit of force is ___ .

A plane has a take-off speed of 120 ms and it reaches that speed after covering 2400 m. Determine the acceleration of the plane (assuming it to be constant) and the time required to reach this speed.

Why is our weight zero when going down in a lift?

Two balls A and B, of masses m and 2m are in motion with velocities 2v and v respectively. Compare the force needed to stop them in the same time.

A 1,000 kg car moving at a speed of 20 m s–1 is brought to rest in a distance of 50 m. Calculate the net force acting on the car.

Which of the following physical quantities is not a scalar?

A stone resting on the ground and has gravitation of 20 Newton acting on it. What is the weight and what is the mass of the stone?

Two balls A and B of masses m and 2m are in motion with velocities 2v and v respectively. Compare : (i) their inertia, (ii) their momentum, and (iii) the force needed to stop them in the same time.

A gun of mass 3 kg fires a bullet of mass 30 g. The bullet takes 0.003 s to move through the barrel of the gun and acquires a velocity of 100 m/s. Calculate the velocity by which the gun recoils.

An object is placed far away from all the objects that can exert force on it. A frame of reference is constructed by taking the origin and axes is fixed in this object. Will the frame be necessarily inertial?

What is the actual shape of the orbit of a planet around the sun? What assumption was made by Newton regarding the shape of an orbit of a planet around the sun for deriving his inverse square rule from Kepler's third law of planetary motion?

When a boy suppose me is whirling a stone tied with a string while he is sitting on a bench.........then everyone who passes from there will say what about the boy -- in motion / rest??

When a fireman directs a powerful stream of water from a hose-pipe, the hose-pipe tends to go backward. This is due to:

What is retardation. Give two examples?

communication satellite moves in the orbit of radius 44400 km around the earth. the acceleration of such a satellite assuming that the only force acting on it is that due to the earth is A)0.4 mps B)0.6mps C)0.2mps D)0.1mps

What is 0^0

The size of a bacteria is 1 μ. Find the number of bacteria in 1 m length.

A Particle with a velocity of 7 m/s at t=0 moves along a stright line with a constant acceleration of 0.3 m/s2.Find the displacement of the particle in 10 secs ?

Water is a _______ of electricity because it does not form ions.

Take a piece of thick wire bent in the form of a loop. It is passed at two points P and Q through horizontal cardboard as shown. The iron filings are sprinkled on the cardboard and current is allowed to flow through the battery. The observation(s) in the following experiment is\are

What is capillarity? Please try to explain it by a video sir, please?

Name the unit of physical quantity obtained by the formula 2K / v*v Where K is kinetic energy v is linear velocity