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This section includes 7 InterviewSolutions, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What happens to the mass of a body if it travels faste than the speed of light |
| Answer» What happens to the mass of a body if it travels faste than the speed of light | |
| 2. |
What percentage of total electrical power generated in India is obtained from nuclear power plants? Name two places in India where electricity is generated from nuclear power plants. |
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Answer» What percentage of total electrical power generated in India is obtained from nuclear power plants? Name two places in India where electricity is generated from nuclear power plants. |
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| 3. |
The Indian name of which planet is "Brihaspati"? |
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Answer» The Indian name of which planet is "Brihaspati"? |
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| 4. |
Calculate the buoyant force (in N) acting on a 250 g rubik's cube of side length 8 cm, if only half of it is submerged in kerosene. The rubik's cube is hanging by a thread. Density of kerosene is 0.8 g cm−3. Take g=10 m s−2.2.048 |
Answer» Calculate the buoyant force (in N) acting on a 250 g rubik's cube of side length 8 cm, if only half of it is submerged in kerosene. The rubik's cube is hanging by a thread. Density of kerosene is 0.8 g cm−3. Take g=10 m s−2.
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| 5. |
Difference between loudness and intensity. Please try to tabulate the solution. |
| Answer» Difference between loudness and intensity. Please try to tabulate the solution. | |
| 6. |
Why do cold drinks bottles break when kept in freezer? |
| Answer» Why do cold drinks bottles break when kept in freezer? | |
| 7. |
When should we use the three laws of motion ? |
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Answer» When should we use the three laws of motion ? |
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| 8. |
What is the difference between weight and mass? |
| Answer» What is the difference between weight and mass? | |
| 9. |
A particle with a velocity of 2 metre per second at T = 20 moves along a straight line with a constant acceleration of 0.2 m /s2 find the displacement of particle in 10 seconds ? |
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Answer» A particle with a velocity of 2 metre per second at T = 20 moves along a straight line with a constant acceleration of 0.2 m /s2 find the displacement of particle in 10 seconds ? |
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| 10. |
Calculate the potential difference between two points, if 1500 J of work is done to carry a charge of 50C from one point to another? |
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Answer» Calculate the potential difference between two points, if 1500 J of work is done to carry a charge of 50C from one point to another? |
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| 11. |
Choose the right answer: When the unpowered bicycle travels on a smooth surface its speed A)increases B)decreases C)does not change D) increases for some time and then decreases |
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Answer» Choose the right answer: When the unpowered bicycle travels on a smooth surface its speed A)increases B)decreases C)does not change D) increases for some time and then decreases |
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| 12. |
An automatic focus camera is able to focus on objects by use of an ultrasonic sound wave. The camera sends out sound waves that reflect off distant objects and return to the camera. A sensor detects the time it takes for the waves to return and then determines the distance an object is from the camera. If a sound wave returns to the camera 0.150 seconds after leaving the camera, how far away is the object? (take speed of sound = 330 m/s) |
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Answer» An automatic focus camera is able to focus on objects by use of an ultrasonic sound wave. The camera sends out sound waves that reflect off distant objects and return to the camera. A sensor detects the time it takes for the waves to return and then determines the distance an object is from the camera. If a sound wave returns to the camera 0.150 seconds after leaving the camera, how far away is the object? (take speed of sound = 330 m/s) |
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| 13. |
Rahul was not listening to his friend as he was playing cricket, his friend got irritated and dropped the ball of 200g from roof top i.e. a height of 10m. The kinetic energy found when it reaches the ground is- |
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Answer» Rahul was not listening to his friend as he was playing cricket, his friend got irritated and dropped the ball of 200g from roof top i.e. a height of 10m. The kinetic energy found when it reaches the ground is- |
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| 14. |
A kid pushes his toy of mass 100 g along a distance of 5 m on the floor of his house by applying a force of magnitude 9 N. What is the energy that has to be put in by the kid for displacing the toy? Is there any change in potential energy possessed by the toy? |
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Answer» A kid pushes his toy of mass 100 g along a distance of 5 m on the floor of his house by applying a force of magnitude 9 N. What is the energy that has to be put in by the kid for displacing the toy? Is there any change in potential energy possessed by the toy? |
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| 15. |
Approximately one billion years ago, the Moon orbited the Earth much closer than it does today. The radius of the orbit was only 24400 km. Today, the radius is 385000 km. The orbital period was only 23400 s. The present period is 2.36×106 s. Assume that the orbit of the Moon is circular. Calculate the ratio of the speed of the Moon in its ancient orbit to the speed that it has today. |
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Answer» Approximately one billion years ago, the Moon orbited the Earth much closer than it does today. The radius of the orbit was only 24400 km. Today, the radius is 385000 km. The orbital period was only 23400 s. The present period is 2.36×106 s. Assume that the orbit of the Moon is circular. Calculate the ratio of the speed of the Moon in its ancient orbit to the speed that it has today. |
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| 16. |
The branch of science that deals with ultrasound is known as ___ . |
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Answer» The branch of science that deals with ultrasound is known as |
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| 17. |
A bifocal lens is used for the correction of ____. The upper part of the bifocal lens is a ____ lens and the lower part is ____. |
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Answer» A bifocal lens is used for the correction of ____. The upper part of the bifocal lens is a ____ lens and the lower part is ____. |
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| 18. |
Why does a man weigh less on the moon than on the Earth? |
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Answer» Why does a man weigh less on the moon than on the Earth? |
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| 19. |
Which of the following relations represent the Ohm's law? V=Voltage, I=Current, R=Resistance |
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Answer» Which of the following relations represent the Ohm's law? |
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| 20. |
Use the following information to answer the next question. Akshay is sitting on a Ferris wheel that is moving with a uniform speed of 1.5 m/s. The diameter of the wheel is 100 metres. After how much time will Akshay reach his initial position? |
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Answer» Use the following information to answer the next question. Akshay is sitting on a Ferris wheel that is moving with a uniform speed of 1.5 m/s. The diameter of the wheel is 100 metres. After how much time will Akshay reach his initial position? |
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| 21. |
If the filament of a bulb is broken, then the bulb said to be ___. |
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Answer» If the filament of a bulb is broken, then the bulb said to be ___. |
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| 22. |
A boy weighs 600 N on the Earth. What would be his weight on the moon? (g=10 ms−2 ) |
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Answer» A boy weighs 600 N on the Earth. What would be his weight on the moon? |
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| 23. |
Two uncharged bodies on rubbing, get charged because of |
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Answer» Two uncharged bodies on rubbing, get charged because of |
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| 24. |
The potential energy is least when you are ___. |
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Answer» The potential energy is least when you are ___. |
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| 25. |
Explain why the tip of a sewing needle is sharp. |
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Answer» Explain why the tip of a sewing needle is sharp. |
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| 26. |
A sound producing body is at considerable distance from a man. There can be four different media W, X, Y and Z between the sound producing body and the man. The medium X brings the sound to man most quickly whereas medium Z takes the maximum time. The time taken by medium W in bringing sound to man is less than that of X but more than that of Z. The medium Y, however, fails to bring the sound from the sound producing body to the man. Which medium could be the one : (a) having a fixed shape and no fixed volume ? (b) having a fixed volume but no fixed volume ? (c) having the same composition as that on the moon ? (d) having a fixed shape and a fixed volume ? |
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Answer» A sound producing body is at considerable distance from a man. There can be four different media W, X, Y and Z between the sound producing body and the man. The medium X brings the sound to man most quickly whereas medium Z takes the maximum time. The time taken by medium W in bringing sound to man is less than that of X but more than that of Z. The medium Y, however, fails to bring the sound from the sound producing body to the man. Which medium could be the one : (a) having a fixed shape and no fixed volume ? (b) having a fixed volume but no fixed volume ? (c) having the same composition as that on the moon ? (d) having a fixed shape and a fixed volume ? |
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| 27. |
Draw a neat and labeled diagram of the human ear. With the help of this diagram, explain the construction and working of the human ear. |
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Answer» Draw a neat and labeled diagram of the human ear. With the help of this diagram, explain the construction and working of the human ear. |
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| 28. |
In which direction will the moon move, if the gravitational pull of the earth suddenly becomes zero? |
| Answer» In which direction will the moon move, if the gravitational pull of the earth suddenly becomes zero? | |
| 29. |
Fig. 10.18 shows a coil wound around a soft iron bar XY. (a) State the polarity at the ends X and Y as the switch is pressed. (b) Suggest one way of increasing the strength of electromagnet so formed. |
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Answer» Fig. 10.18 shows a coil wound around a soft iron bar XY. (a) State the polarity at the ends X and Y as the switch is pressed. (b) Suggest one way of increasing the strength of electromagnet so formed.
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| 30. |
A piston that is a part of a hydraulic system has a surface area of 0.025 square meters. The hydraulic fluid pushes the piston with a pressure of 20000 Pa. What pressure has been applied to another piston in the same system? |
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Answer» A piston that is a part of a hydraulic system has a surface area of 0.025 square meters. The hydraulic fluid pushes the piston with a pressure of 20000 Pa. What pressure has been applied to another piston in the same system? |
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| 31. |
A toy car falls to the ground in 0.4 seconds after release. Calcuate its speed just befoe hitting the ground. Take g=10 m/sˆ2 Please mail me the answer at chinmaya jhagmail.com |
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Answer» A toy car falls to the ground in 0.4 seconds after release. Calcuate its speed just befoe hitting the ground. Take g=10 m/sˆ2 Please mail me the answer at chinmaya jhagmail.com |
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| 32. |
Rest and motion are relative terms explain |
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Answer» Rest and motion are relative terms explain |
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| 33. |
A sample of metal weighs 210 gm in air, 180 gm in water and 120 gm in liquid. Then relative density (RD) of |
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Answer» A sample of metal weighs 210 gm in air, 180 gm in water and 120 gm in liquid. Then relative density (RD) of |
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| 34. |
Explain why, if we strike a table lightly, we hear a soft sound but if we hit the table hard, a loud sound is heard. |
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Answer» Explain why, if we strike a table lightly, we hear a soft sound but if we hit the table hard, a loud sound is heard. |
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| 35. |
___ Pa is the pressure at a depth of 50 m below the surface of the sea. The density of seawater is 1024 kg/m3. |
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Answer» |
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| 36. |
It takes 0.2 s for a pendulum bob to move from mean position to one end. What is the time period of pendulum ? |
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Answer» It takes 0.2 s for a pendulum bob to move from mean position to one end. What is the time period of pendulum ? |
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| 37. |
Name the three systems of unit and state the various fundamental units in them. |
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Answer» Name the three systems of unit and state the various fundamental units in them. |
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| 38. |
A body falls freely from a certain height.Show graphically the relation between the distance fallen and square of time.How will you determine g from this graph? |
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Answer» A body falls freely from a certain height.Show graphically the relation between the distance fallen and square of time.How will you determine g from this graph? |
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| 39. |
A body covers some distance along a curved path. Can it have a zero average velocity? |
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Answer» A body covers some distance along a curved path. Can it have a zero average velocity? |
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| 40. |
What is meant by inpluse. |
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Answer» What is meant by inpluse. |
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| 41. |
Do oil (vegetable ) and acid evaporate ? |
| Answer» Do oil (vegetable ) and acid evaporate ? | |
| 42. |
How to prove F=ma |
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Answer» How to prove F=ma |
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| 43. |
Is it right that in all uniform motions like uniform speed and uniform velocity, the object will travel only in a straight path? |
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Answer» Is it right that in all uniform motions like uniform speed and uniform velocity, the object will travel only in a straight path? |
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| 44. |
Why is the metre length in terms of wave of light considered more accurate? |
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Answer» Why is the metre length in terms of wave of light considered more accurate? |
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| 45. |
State any 2 differences between Inertia of rest and inertia of motion. |
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Answer» State any 2 differences between Inertia of rest and inertia of motion. |
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| 46. |
A Rocket is launched to travel vertically upwards with a constant velocity of 20 m/s. After travelling for 35 seconds rocket develops a snag and its fuel supply is cut off. The rocket then travels like a free body. What is the total height achieved by it? After what time of its launch will it come back to the earth? ( g= 10 m/s2) |
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Answer» A Rocket is launched to travel vertically upwards with a constant velocity of 20 m/s. After travelling for 35 seconds rocket develops a snag and its fuel supply is cut off. The rocket then travels like a free body. What is the total height achieved by it? After what time of its launch will it come back to the earth? ( g= 10 m/s2) |
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| 47. |
When we a touch an electric wire we conduct the electricity right.so the electricity passes from our body to earth.so what if we are in Air and touch the wire.do we conduct electricity then.and also tell me how our body filled with calcium sodium and other elements conducts electricity. |
| Answer» When we a touch an electric wire we conduct the electricity right.so the electricity passes from our body to earth.so what if we are in Air and touch the wire.do we conduct electricity then.and also tell me how our body filled with calcium sodium and other elements conducts electricity. | |
| 48. |
Determine The amount of potential energy of a 5 Newton book that is moved from the ground to 3 different shelves on a book case. The height of each shelves is 1 m 1.5 m and 2 m from the ground |
| Answer» Determine The amount of potential energy of a 5 Newton book that is moved from the ground to 3 different shelves on a book case. The height of each shelves is 1 m 1.5 m and 2 m from the ground | |
| 49. |
What is mean by vector. (explain,in,simplest manner) |
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Answer» What is mean by vector. (explain,in,simplest manner) |
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| 50. |
Where do the traders of Palampur buy goods for sale? |
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Answer» Where do the traders of Palampur buy goods for sale? |
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