13232 + Interview Questions in Physics Page 108 InterviewSolution

5351.	What is the magnification of a plane mirror?
Answer» What is the magnification of a plane mirror?

Discussion

5352.	A force of 15N gives a mass m1 an acceleration of 3m/s2 and mass m2 an acceleration 5m/s2. what acceleration would it give if both the mass were tied together
Answer» A force of 15N gives a mass m1 an acceleration of 3m/s2 and mass m2 an acceleration 5m/s2. what acceleration would it give if both the mass were tied together

Discussion

5353.	A person throws a bottle into a d dustbin at the same height as he is 2 metre away at an angle 45°. The velocity at which it is thrown is
Answer» A person throws a bottle into a d dustbin at the same height as he is 2 metre away at an angle 45°. The velocity at which it is thrown is

Discussion

5354.	What is the average wind speed required for efficient harnessing of wind energy?
Answer» What is the average wind speed required for efficient harnessing of wind energy?

Discussion

5355.	What is the work done against gravity when a body is moved horizontally along a frictionless surface ?
Answer» What is the work done against gravity when a body is moved horizontally along a frictionless surface ?

Discussion

5356.	The action and reaction are equal in magnitude' is this statement true?
Answer» The action and reaction are equal in magnitude' is this statement true?

Discussion

5357.	a ball thrown upward is return back to the ground in 10 seconds.Find the position of the ball after 7 second. (g= 10m/s^2).
Answer» a ball thrown upward is return back to the ground in 10 seconds.Find the position of the ball after 7 second. (g= 10m/s^2).

Discussion

5358.	Define uniform and non-uniform motion with examples from daily life.
Answer» Define uniform and non-uniform motion with examples from daily life.

Discussion

5359.	A batsman hits two balls of different masses 0.5 kg and 1 kg out of the stadium, with the same velocity. What would be the ratio of their kinetic energies?
Answer» A batsman hits two balls of different masses $0.5 k g$ and $1 k g$ out of the stadium, with the same velocity. What would be the ratio of their kinetic energies?

Discussion

5360.	Newton's first law of motion?
Answer» Newton's first law of motion?

Discussion

5361.	If two point charges q_1 and q_2 are placed at (y,0) and (x,0) respectively such that the net electric field is directed along the slope of line joining origin and point (x,y),then the ratio of magnitudes of charges is?
Answer» If two point charges q_1 and q_2 are placed at (y,0) and (x,0) respectively such that the net electric field is directed along the slope of line joining origin and point (x,y),then the ratio of magnitudes of charges is?

Discussion

5362.	Two bodies of different masses ma and mb are dropped from different height viz a and b. The ratio of ties taken by the two to drop through this distances is??
Answer» Two bodies of different masses ma and mb are dropped from different height viz a and b. The ratio of ties taken by the two to drop through this distances is??

Discussion

5363.	A thief is running on a train with 12 km/h. The police car is moving with 80 km/h. If speed of the train is 60 km/h. What is the speed of thief w.r.t police car?
Answer» A thief is running on a train with 12 km/h. The police car is moving with 80 km/h. If speed of the train is 60 km/h. What is the speed of thief w.r.t police car?

Discussion

5364.	Name two substances which expand on heating.
Answer» Name two substances which expand on heating.

Discussion

5365.	One mole of an element has 0.444 times the mass of one mole of element y . One atom of element X has 2.96 times the mass of an atom of C-12 atom .what is the atomic weight of y ?
Answer» One mole of an element has 0.444 times the mass of one mole of element y . One atom of element X has 2.96 times the mass of an atom of C-12 atom .what is the atomic weight of y ?

Discussion

5366.	The force of gravitation between two bodies in the universe does not depend on:
Answer» The force of gravitation between two bodies in the universe does not depend on:

Discussion

5367.	Why cannot a v-t graph of constant positive acceleration begin from the origin of the graph?
Answer» Why cannot a v-t graph of constant positive acceleration begin from the origin of the graph?

Discussion

5368.	Name the different types of fuels that cause pollution and which amongst them causes the least pollution?
Answer» Name the different types of fuels that cause pollution and which amongst them causes the least pollution?

Discussion

5369.	How is marine ecosystem different from fresh water one?
Answer» How is marine ecosystem different from fresh water one?

Discussion

5370.	a train travelling at a spedof 90 kmh-1 Brakesare are appliedso as to produce a uniform accleration of 0.5 ms-2 find howfar thetyrain will go before it is bought to rest
Answer» a train travelling at a spedof 90 kmh-1 Brakesare are appliedso as to produce a uniform accleration of 0.5 ms-2 find howfar thetyrain will go before it is bought to rest

Discussion

5371.	Like poles of magnets ___ each other.
Answer» Like poles of magnets ___ each other.

Discussion

5372.	1,What is work?
Answer» 1,What is work?

Discussion

5373.	A motor bike running at 90km/h is slowed to 54km/h by the application of brakes over a distance of 40 m if the brakes are applied with the same force calculate the : 1 total time in which bike comes to rest 2 total distance travelled by the bike
Answer» A motor bike running at 90km/h is slowed to 54km/h by the application of brakes over a distance of 40 m if the brakes are applied with the same force calculate the : 1 total time in which bike comes to rest 2 total distance travelled by the bike

5373.

A motor bike running at 90km/h is slowed to 54km/h by the application of brakes over a distance of 40 m if the brakes are applied with the same force calculate the : 1 total time in which bike comes to rest 2 total distance travelled by the bike

Answer»

A motor bike running at 90km/h is slowed to 54km/h by the application of brakes over a distance of 40 m if the brakes are applied with the same force calculate the :

1 total time in which bike comes to rest

2 total distance travelled by the bike

Discussion

5374.	A construction worker’s helmet slips and falls down when he is 78.4m above the ground. He hears the sound of the helmet hitting the ground 4.23 seconds after it has slipped. Find the speed of sound in air.
Answer» A construction worker’s helmet slips and falls down when he is 78.4m above the ground. He hears the sound of the helmet hitting the ground 4.23 seconds after it has slipped. Find the speed of sound in air.

Discussion

5375.	On a foggy day, two car drivers spot each other, when they are just 80 m apart. They are traveling at 72 km/h and 60 km/h respectively towards each other. Both of them simultaneously apply brakes, which retard both the cars at a rate of 5 m/s2. Determine whether they avert the collision or not.
Answer» On a foggy day, two car drivers spot each other, when they are just 80 m apart. They are traveling at 72 km/h and 60 km/h respectively towards each other. Both of them simultaneously apply brakes, which retard both the cars at a rate of 5 m/s². Determine whether they avert the collision or not.

Discussion

5376.	The potential at a certain distance from a charge is 600V and the Electric field is 200N/C A) what is the distance to the point charge? B) what is the magnitude of charge?
Answer» The potential at a certain distance from a charge is 600V and the Electric field is 200N/C A) what is the distance to the point charge? B) what is the magnitude of charge?

Discussion

5377.	An electric fan is placed on a stationary boat and air is blown with it on the sail of the boat. Which of the following statements is correct?(1)The boat will be uniformly accelerated in the direction of the flow of the air(2)The boat will start moving with uniform speed.(3)The boat will be uniformly accelerated opposite to the direction of flow of air(4)The boat will remain stationary as before
Answer» An electric fan is placed on a stationary boat and air is blown with it on the sail of the boat. Which of the following statements is correct? (1) The boat will be uniformly accelerated in the direction of the flow of the air (2) The boat will start moving with uniform speed. (3) The boat will be uniformly accelerated opposite to the direction of flow of air (4) The boat will remain stationary as before

Discussion

5378.	One degree celsius rise in temperature is equal to
Answer» One degree celsius rise in temperature is equal to

Discussion

5379.	A truck moves at 36 kmh−1. It increases its velocity to 90 kmh−1 in 0.1 minute.What is the acceleration of the truck?
Answer» A truck moves at $36 k m h^{- 1}$ . It increases its velocity to $90 k m h^{- 1}$ in $0.1 m i n u t e$ . What is the acceleration of the truck?

5379.

A truck moves at 36 kmh−1. It increases its velocity to 90 kmh−1 in 0.1 minute.What is the acceleration of the truck?

Answer»

A truck moves at $36 k m h^{- 1}$ . It increases its velocity to $90 k m h^{- 1}$ in $0.1 m i n u t e$ .

What is the acceleration of the truck?

Discussion

5380.	Hariram travels at a speed of 20 km hr−1 while going to school. While coming back, he travels at a speed of 30 km hr−1(due to less traffic). What is his average speed?
Answer» Hariram travels at a speed of $20 k m h r^{- 1}$ while going to school. While coming back, he travels at a speed of $30 k m h r^{- 1}$ (due to less traffic). What is his average speed?

Discussion

5381.	3.A refrigerator freezes 5 kg of water at 0^° C into ice at 0^° C in a time interval of 20 minutes. Assume that room temperature is 20^° C. Calculate the minimum power needed to accomplish it?
Answer» 3.A refrigerator freezes 5 kg of water at 0^° C into ice at 0^° C in a time interval of 20 minutes. Assume that room temperature is 20^° C. Calculate the minimum power needed to accomplish it?

Discussion

5382.	Q1 A body is projected horizontally from the top of the tower with initial velocity 18 metre per second it hit the ground at angle 45 degree what is the vertical component of velocity when it strikes the ground? Q2 the range of projectile is 50 M when theta is inclined with horizontal at 15 degree what is the range when theta becomes 45 degree?
Answer» Q1 A body is projected horizontally from the top of the tower with initial velocity 18 metre per second it hit the ground at angle 45 degree what is the vertical component of velocity when it strikes the ground? Q2 the range of projectile is 50 M when theta is inclined with horizontal at 15 degree what is the range when theta becomes 45 degree?

Discussion

5383.	If a train has 10 coaches,if each min one coach is removed if it's initial speed is 50 Km/h then find its final speed
Answer» If a train has 10 coaches,if each min one coach is removed if it's initial speed is 50 Km/h then find its final speed

Discussion

5384.	The speed of sound in hydrogen at NTP is 1270m/s . Then the speed in a mixture of hydrogen and oxygen in the ratio 4:1 by volume,(m/s) will be 1)635 2)318 3)158 4)1270
Answer» The speed of sound in hydrogen at NTP is 1270m/s . Then the speed in a mixture of hydrogen and oxygen in the ratio 4:1 by volume,(m/s) will be 1)635 2)318 3)158 4)1270

Discussion

5385.	Two scooters starting from rest accelerate uniformly at the same rate. Time taken by second scooter to travel is twice the time taken by the first scooter. Then the relation between the distance covered by the first scooter (S1) to that of the second scooter (S2) is
Answer» Two scooters starting from rest accelerate uniformly at the same rate. Time taken by second scooter to travel is twice the time taken by the first scooter. Then the relation between the distance covered by the first scooter $(S_{1})$ to that of the second scooter $(S_{2})$ is

Discussion

5386.	What is Specific Heat? How is specific heat determined?
Answer» What is Specific Heat? How is specific heat determined?

Discussion

5387.	Q3) On a 120km long track, a train travel's first 30km and an average speed of 30km/hr. How fast must tha train travel next 90km so that average speed for entire trip becomes 60km/hr
Answer» Q3) On a 120km long track, a train travel's first 30km and an average speed of 30km/hr. How fast must tha train travel next 90km so that average speed for entire trip becomes 60km/hr

Discussion

5388.	A force of 10 N acts on a ball moving on a surface. The force of friction that must act between the surface of the ball and the surface so that the ball keeps on moving with constant velocity over the surface must be:
Answer» A force of 10 N acts on a ball moving on a surface. The force of friction that must act between the surface of the ball and the surface so that the ball keeps on moving with constant velocity over the surface must be:

Discussion

5389.	A stone is dropped from the top of a tower and travels24.5 m in the last second of its journey. The heightof the tower is(2) 49 m(1) 44.1 m(4) 72 m(3) 78.4 m
Answer» A stone is dropped from the top of a tower and travels24.5 m in the last second of its journey. The heightof the tower is(2) 49 m(1) 44.1 m(4) 72 m(3) 78.4 m

Discussion

5390.	A physical balance has its arms of unequal length. A body weighs 18kg if kept in one pan and weighs 8kg if kept in the other pan. The true weight of the body is
Answer» A physical balance has its arms of unequal length. A body weighs 18kg if kept in one pan and weighs 8kg if kept in the other pan. The true weight of the body is

Discussion

5391.	What is the galileo's law of inertia?
Answer» What is the galileo's law of inertia?

Discussion

5392.	A person is listening to a tone of 500 hz. He is sitting at a distance of 450 m from the source of the sound. What is the time interval between successive compressions from the source ?
Answer» A person is listening to a tone of 500 hz. He is sitting at a distance of 450 m from the source of the sound. What is the time interval between successive compressions from the source ?

Discussion

5393.	A 60 kg skydiver moving at terminal speed and travelled 40 m in 2 seconds. The sky diver is spending a power of___ kW.
Answer» A 60 kg skydiver moving at terminal speed and travelled 40 m in 2 seconds. The sky diver is spending a power of ___ kW.

Discussion

5394.	When a running bus stops suddenly, the passengers tend to fall in the forward direction. This is due to
Answer» When a running bus stops suddenly, the passengers tend to fall in the forward direction. This is due to

Discussion

5395.	Case study (1)A car battery with a 12 V of emf and an internal resistance of 0.04 Ω is being charged with a current of 50 A.(iii)The rate of energy conversion from electrical to chemical is
Answer» Case study $(1)$ A car battery with a $12 V$ of emf and an internal resistance of $0.04 Ω$ is being charged with a current of $50 A .$ $(i i i)$ The rate of energy conversion from electrical to chemical is

Discussion

5396.	On the distance-time graph, the Y-axis should be labelled as:
Answer» On the distance-time graph, the Y-axis should be labelled as:

Discussion

5397.	A simple pendulum is oscillating without damping. When the displacement of the bob is less than maximum,it's acceleration vector a is correctly shown in
Answer» A simple pendulum is oscillating without damping. When the displacement of the bob is less than maximum,it's acceleration vector a is correctly shown in

Discussion

5398.	What is the simplest statement of Newton second law of motion
Answer» What is the simplest statement of Newton second law of motion

Discussion

5399.	In P V diagram Di cycle is clockwise than work done in chemistry is positive or negativw
Answer» In P V diagram Di cycle is clockwise than work done in chemistry is positive or negativw

Discussion

5400.	Newton's which law is used or can be observed in the working of a sprinkler?
Answer» Newton's which law is used or can be observed in the working of a sprinkler?

Discussion

Explore topic-wise InterviewSolutions in .

What is the magnification of a plane mirror?

A force of 15N gives a mass m1 an acceleration of 3m/s2 and mass m2 an acceleration 5m/s2. what acceleration would it give if both the mass were tied together

A person throws a bottle into a d dustbin at the same height as he is 2 metre away at an angle 45°. The velocity at which it is thrown is

What is the average wind speed required for efficient harnessing of wind energy?

What is the work done against gravity when a body is moved horizontally along a frictionless surface ?

The action and reaction are equal in magnitude' is this statement true?

a ball thrown upward is return back to the ground in 10 seconds.Find the position of the ball after 7 second. (g= 10m/s^2).

Define uniform and non-uniform motion with examples from daily life.

A batsman hits two balls of different masses 0.5 kg and 1 kg out of the stadium, with the same velocity. What would be the ratio of their kinetic energies?

Newton's first law of motion?

If two point charges q_1 and q_2 are placed at (y,0) and (x,0) respectively such that the net electric field is directed along the slope of line joining origin and point (x,y),then the ratio of magnitudes of charges is?

Two bodies of different masses ma and mb are dropped from different height viz a and b. The ratio of ties taken by the two to drop through this distances is??

A thief is running on a train with 12 km/h. The police car is moving with 80 km/h. If speed of the train is 60 km/h. What is the speed of thief w.r.t police car?

Name two substances which expand on heating.

One mole of an element has 0.444 times the mass of one mole of element y . One atom of element X has 2.96 times the mass of an atom of C-12 atom .what is the atomic weight of y ?

The force of gravitation between two bodies in the universe does not depend on:

Why cannot a v-t graph of constant positive acceleration begin from the origin of the graph?

Name the different types of fuels that cause pollution and which amongst them causes the least pollution?

How is marine ecosystem different from fresh water one?

a train travelling at a spedof 90 kmh-1 Brakesare are appliedso as to produce a uniform accleration of 0.5 ms-2 find howfar thetyrain will go before it is bought to rest

Like poles of magnets ___ each other.

1,What is work?

A motor bike running at 90km/h is slowed to 54km/h by the application of brakes over a distance of 40 m if the brakes are applied with the same force calculate the : 1 total time in which bike comes to rest 2 total distance travelled by the bike

A construction worker’s helmet slips and falls down when he is 78.4m above the ground. He hears the sound of the helmet hitting the ground 4.23 seconds after it has slipped. Find the speed of sound in air.

The potential at a certain distance from a charge is 600V and the Electric field is 200N/C A) what is the distance to the point charge? B) what is the magnitude of charge?

One degree celsius rise in temperature is equal to

A truck moves at 36 kmh−1. It increases its velocity to 90 kmh−1 in 0.1 minute.What is the acceleration of the truck?

Hariram travels at a speed of 20 km hr−1 while going to school. While coming back, he travels at a speed of 30 km hr−1(due to less traffic). What is his average speed?

3.A refrigerator freezes 5 kg of water at 0^° C into ice at 0^° C in a time interval of 20 minutes. Assume that room temperature is 20^° C. Calculate the minimum power needed to accomplish it?

If a train has 10 coaches,if each min one coach is removed if it's initial speed is 50 Km/h then find its final speed

The speed of sound in hydrogen at NTP is 1270m/s . Then the speed in a mixture of hydrogen and oxygen in the ratio 4:1 by volume,(m/s) will be 1)635 2)318 3)158 4)1270

Two scooters starting from rest accelerate uniformly at the same rate. Time taken by second scooter to travel is twice the time taken by the first scooter. Then the relation between the distance covered by the first scooter (S1) to that of the second scooter (S2) is

What is Specific Heat? How is specific heat determined?

Q3) On a 120km long track, a train travel's first 30km and an average speed of 30km/hr. How fast must tha train travel next 90km so that average speed for entire trip becomes 60km/hr

A force of 10 N acts on a ball moving on a surface. The force of friction that must act between the surface of the ball and the surface so that the ball keeps on moving with constant velocity over the surface must be:

A stone is dropped from the top of a tower and travels24.5 m in the last second of its journey. The heightof the tower is(2) 49 m(1) 44.1 m(4) 72 m(3) 78.4 m

A physical balance has its arms of unequal length. A body weighs 18kg if kept in one pan and weighs 8kg if kept in the other pan. The true weight of the body is

What is the galileo's law of inertia?

A person is listening to a tone of 500 hz. He is sitting at a distance of 450 m from the source of the sound. What is the time interval between successive compressions from the source ?

A 60 kg skydiver moving at terminal speed and travelled 40 m in 2 seconds. The sky diver is spending a power of___ kW.

When a running bus stops suddenly, the passengers tend to fall in the forward direction. This is due to

Case study (1)A car battery with a 12 V of emf and an internal resistance of 0.04 Ω is being charged with a current of 50 A.(iii)The rate of energy conversion from electrical to chemical is

On the distance-time graph, the Y-axis should be labelled as:

A simple pendulum is oscillating without damping. When the displacement of the bob is less than maximum,it's acceleration vector a is correctly shown in

What is the simplest statement of Newton second law of motion

In P V diagram Di cycle is clockwise than work done in chemistry is positive or negativw

Newton's which law is used or can be observed in the working of a sprinkler?