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This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 9701. |
How the loudness of sound is related with energy and amplitude |
| Answer» How the loudness of sound is related with energy and amplitude | |
| 9702. |
Sir/Man following is my question : Briefly explain how does a karate player breaks a slab of ice with a single blow. Pls help me solve this question. Thnx |
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Answer» Sir/Man following is my question : Briefly explain how does a karate player breaks a slab of ice with a single blow. Pls help me solve this question. Thnx |
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| 9703. |
If the radius of the Earth contracts by 1%, mass being the same. What would be the effect on our weight? |
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Answer» If the radius of the Earth contracts by 1%, mass being the same. What would be the effect on our weight? |
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| 9704. |
A man is standing 40m behindthe bus. The bus starts with acceleration 1m/s^2 also at the same instant the man starts moving with constant speed 9 m/s the minimum time taken by the man to catch the bus will be |
| Answer» A man is standing 40m behindthe bus. The bus starts with acceleration 1m/s^2 also at the same instant the man starts moving with constant speed 9 m/s the minimum time taken by the man to catch the bus will be | |
| 9705. |
What is the value of G in force of an gravity |
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Answer» What is the value of G in force of an gravity |
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| 9706. |
When a nail is placed in water and it sinks, its weight which is the gravitational attraction of the earth is downwards. The upthrust |
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Answer» When a nail is placed in water and it sinks, its weight which is the gravitational attraction of the earth is downwards. The upthrust |
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| 9707. |
Can velocity be zero for a moving body |
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Answer» Can velocity be zero for a moving body |
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| 9708. |
A boy kicked a stone and got hurt. Which property of stone is responsible? |
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Answer» A boy kicked a stone and got hurt. Which property of stone is responsible? |
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| 9709. |
A driver decreases the speed of car from 25m/sec to 10 m/sec in 5 seconds. Find the acceleration |
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Answer» A driver decreases the speed of car from 25m/sec to 10 m/sec in 5 seconds. Find the acceleration |
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| 9710. |
If a total distance of 750 m is covered in a time interval of 25 s,the average speed is |
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Answer» If a total distance of 750 m is covered in a time interval of 25 s,the average speed is |
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| 9711. |
Every action has an equal opposite reaction . then why does it not work in fluids . And when we put some body in water why does it sink if this law is universal (or is it not universal )? |
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Answer» Every action has an equal opposite reaction . then why does it not work in fluids . And when we put some body in water why does it sink if this law is universal (or is it not universal )? |
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| 9712. |
Are the equations of motion applicable for the analysis of motion under gravity near the surface of the Earth? |
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Answer» Are the equations of motion applicable for the analysis of motion under gravity near the surface of the Earth? |
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| 9713. |
A satellite X is launched into a circular orbit of radius R around the earth while a second satellite Y is launched into an orbit of radius 4R. The ratio of the time periods of Y to X is ______. |
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Answer» A satellite X is launched into a circular orbit of radius R around the earth while a second satellite Y is launched into an orbit of radius 4R. The ratio of the time periods of Y to X is ______. |
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| 9714. |
Jordan is running on a circular track. After some time he stops at the same position from where he started. The displacement covered by him is |
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Answer» Jordan is running on a circular track. After some time he stops at the same position from where he started. The displacement covered by him is |
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| 9715. |
A boy gets into a floating boat. (a) What happens to the boat ? (b) What happens to the weight of water displaced ? (c) What happens to the buoyant force on the boat ? |
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Answer» A boy gets into a floating boat. (a) What happens to the boat ? (b) What happens to the weight of water displaced ? (c) What happens to the buoyant force on the boat ? |
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| 9716. |
A load of 4.0 kg is suspended from a ceiling through a steel wire of radius 2.0 mm. Find the tensile stress developed in the wire when equilibrium is achieved. Take g=3.1π ms−2. |
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Answer» A load of 4.0 kg is suspended from a ceiling through a steel wire of radius 2.0 mm. Find the tensile stress developed in the wire when equilibrium is achieved. Take g=3.1π ms−2. |
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| 9717. |
The universal law of gravitation states that every object exerts a gravitational force of attraction on every other object. If this is true, why don't we notice such forces? Why don't the two objects in a room move towards each other due to this force? |
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Answer» The universal law of gravitation states that every object exerts a gravitational force of attraction on every other object. If this is true, why don't we notice such forces? Why don't the two objects in a room move towards each other due to this force? |
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| 9718. |
Why are rockets not held up by the gravity of sun when it enters the space or traveling in space? |
| Answer» Why are rockets not held up by the gravity of sun when it enters the space or traveling in space? | |
| 9719. |
Starting from a stationary position, Seetha paddles her bicycle to attain a velocity of 6 m/s in 30s. Then she applies brakes such that the velocity of the bicycle comes down to 4 m/s in the next 5s. Calculate the acceleration of the bicycle in both the cases. |
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Answer» Starting from a stationary position, Seetha paddles her bicycle to attain a velocity of 6 m/s in 30s. Then she applies brakes such that the velocity of the bicycle comes down to 4 m/s in the next 5s. Calculate the acceleration of the bicycle in both the cases. |
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| 9720. |
If energy can neither be created nor destroyed, then why do we need to conserve energy? |
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Answer» If energy can neither be created nor destroyed, then why do we need to conserve energy? |
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| 9721. |
Ques. Make velocity-time and displacement-time graph of a car which was initially moving with 40 m/s and has been applied brakes which gives it a retardation of 5 m/s2 . |
| Answer» Ques. Make velocity-time and displacement-time graph of a car which was initially moving with 40 m/s and has been applied brakes which gives it a retardation of 5 m/s2 . | |
| 9722. |
All bodies lose their weight at the center of earth. Why ? |
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Answer» All bodies lose their weight at the center of earth. Why ? |
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| 9723. |
A ball is thrown vertically upwards and reaches the maximum height in 3 seconds. Find the initial velocity and height reached by the ball |
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Answer» A ball is thrown vertically upwards and reaches the maximum height in 3 seconds. Find the initial velocity and height reached by the ball |
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| 9724. |
What is the ratio of Heat Capacity (HC) to Specific Heat Capacity (SHC) of a body? |
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Answer» What is the ratio of Heat Capacity (HC) to Specific Heat Capacity (SHC) of a body? |
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| 9725. |
Why does a pillion rider fall forward, when the driver of a two-wheeler suddenly applies the brakes? |
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Answer» Why does a pillion rider fall forward, when the driver of a two-wheeler suddenly applies the brakes? |
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| 9726. |
A car covers 30 km at a uniform speed of 30 km/h. What should be its speed for the next 90 km if the average speed of the entire journey is 60 km/h? |
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Answer» A car covers 30 km at a uniform speed of 30 km/h. What should be its speed for the next 90 km if the average speed of the entire journey is 60 km/h? |
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| 9727. |
If a heater of 100Ω resistance draws a current of 5A for an hour then find the energy consumed by the heater. |
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Answer» If a heater of 100Ω resistance draws a current of 5A for an hour then find the energy consumed by the heater. |
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| 9728. |
In a solar panel, the metal used is ______. |
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Answer» In a solar panel, the metal used is ______. |
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| 9729. |
Describe a simple experiment which demonstrates that the sound produced by a tuning fork is due to vibrations of its arms. |
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Answer» Describe a simple experiment which demonstrates that the sound produced by a tuning fork is due to vibrations of its arms. |
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| 9730. |
The principle of conservation of linear momentum states that if in any assigned direction the net external force on a system is zero, then the linear momentum of the system will remain constant in that direction. Answer the following question. Suppose the mass of the cart along with your mass is 100 kg and there are 4 balls each of mass 2 kg in the cart that is now moving at a constant speed 20 ms to the left on the frictionless track. If you throw a ball straight up with a velocity 20 ms, how will the speed of the cart change? |
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Answer» The principle of conservation of linear momentum states that if in any assigned direction the net external force on a system is zero, then the linear momentum of the system will remain constant in that direction. Answer the following question. |
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| 9731. |
When we apply force on wall, it doesn't move. Does it mean the kinetic energy generated did not get transferred into the wall |
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Answer» When we apply force on wall, it doesn't move. Does it mean the kinetic energy generated did not get transferred into the wall |
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| 9732. |
Carefully study the circuit diagram in the figure and calculate the value of resistor x. |
Answer» Carefully study the circuit diagram in the figure and calculate the value of resistor x. 
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| 9733. |
A rope is stretched between two boats at rest. A sailor in the first boat pulls the rope with a constant force of 100 N. First boat with the sailor has a mass of 250 kg whereas the mass of second boat is double of this mass. If the initial distance between the boats was 30 m, the time taken for two boats to meet each other is (neglect water resistance between boats and water) |
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Answer» A rope is stretched between two boats at rest. A sailor in the first boat pulls the rope with a constant force of 100 N. First boat with the sailor has a mass of 250 kg whereas the mass of second boat is double of this mass. If the initial distance between the boats was 30 m, the time taken for two boats to meet each other is (neglect water resistance between boats and water) |
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| 9734. |
To what extent the atmosphere is extended above the surface of the Earth, assuming the density of air to be uniform [1.3 kg/m3] and pressure at the surface of Earth to be 105 Pa. (Also assume the Earth to be perfectly spherical and no variation in 'g' due to height.) 6 km < h < 7 km |
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Answer» To what extent the atmosphere is extended above the surface of the Earth, assuming the density of air to be uniform [1.3 kg/m3] and pressure at the surface of Earth to be 105 Pa. (Also assume the Earth to be perfectly spherical and no variation in 'g' due to height.)
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| 9735. |
Slope of velocity time graph gives about displacement or distance |
| Answer» Slope of velocity time graph gives about displacement or distance | |
| 9736. |
Derive newton second law and third law |
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Answer» Derive newton second law and third law |
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| 9737. |
State the numerical value of the frequency of oscillation of a second's pendulum. Does it depend on the amplitude of oscillation? |
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Answer» State the numerical value of the frequency of oscillation of a second's pendulum. Does it depend on the amplitude of oscillation? |
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| 9738. |
There is a hole in the bottom of tank having water. If total pressure at bottom is 3 atm (1atm=105N/m2) then the velocity of water flowing from hole is |
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Answer» There is a hole in the bottom of tank having water. If total pressure at bottom is 3 atm (1atm=105N/m2) then the velocity of water flowing from hole is |
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| 9739. |
Look at the figure given below and answer the question based on it. Iron filings are sprinkled on a cardboard perpendicular to which a current carrying copper wire runs. The other components of the circuit have their usual meanings. What happens to a compass at a particular point near the copper wire if the current through the circuit is increased? |
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Answer» Look at the figure given below and answer the question based on it. Iron filings are sprinkled on a cardboard perpendicular to which a current carrying copper wire runs. The other components of the circuit have their usual meanings.
What happens to a compass at a particular point near the copper wire if the current through the circuit is increased? |
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| 9740. |
The motion of centre of mass of a system of two particles is unaffected by their internal forces |
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Answer» The motion of centre of mass of a system of two particles is unaffected by their internal forces |
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| 9741. |
How can two cells of 1.5V each can be connected to get 3V? |
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Answer» How can two cells of 1.5V each can be connected to get 3V? |
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| 9742. |
If two forces as shown in the figure are 6 N and 4 N are acting opposite. The mass of the object is 2kg. What is the acceleration of the mass? |
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Answer» If two forces as shown in the figure are 6 N and 4 N are acting opposite. The mass of the object is 2kg. What is the acceleration of the mass?
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| 9743. |
What is meant by supersonic speed? |
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Answer» What is meant by supersonic speed? |
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| 9744. |
Applications of Newton's first law, second law and third law of motion. (10 for each law) |
| Answer» Applications of Newton's first law, second law and third law of motion. (10 for each law) | |
| 9745. |
The graph of variation in volume (V) plotted against 1/P at a constant temperature is _______ . |
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Answer» The graph of variation in volume (V) plotted against 1/P at a constant temperature is _______ . |
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| 9746. |
If action and reaction are equal and opposite, then how can the motion take place? |
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Answer» If action and reaction are equal and opposite, then how can the motion take place? |
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| 9747. |
If the weight of a body on the earth is 6 N, what will it be on the moon ? |
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Answer» If the weight of a body on the earth is 6 N, what will it be on the moon ? |
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| 9748. |
Explain law of conservation of energy? And also commercial unit of energy? |
| Answer» Explain law of conservation of energy? And also commercial unit of energy? | |
| 9749. |
Name these forces : (a) the upward push of water on a submerged object (b) the force which wears away two surfaces as they move over one another (c) the force which pulled the apple off Isaac Newton's tree. (d) the force which stops you falling through the floor. |
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Answer» Name these forces : |
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| 9750. |
Water flows through the tube shown in figure. The areas of cross section of the wide and the narrow portions of the tube are 5 cm2 and 2 cm2 respectively. The rate of flow of water through the tube is 500 cm3 s-1. Find the difference of mercury levels in the U-tube. Assume this tube lying horizontally on a table. |
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Answer» Water flows through the tube shown in figure. The areas of cross section of the wide and the narrow portions of the tube are 5 cm2 and 2 cm2 respectively. The rate of flow of water through the tube is 500 cm3 s-1. Find the difference of mercury levels in the U-tube. Assume this tube lying horizontally on a table.
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