Saved Bookmarks
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. |
Winch is the divide used to measure use of current in household |
| Answer» Winch is the divide used to measure use of current in household | |
| 2. |
Match the following statements with correct terms associated with it. A) Light makes tiny particles visible due to scattering. B) The effect of seeing an object is retained by the eye for 116th of a second. C) Composite light splits up into component colours. 1) Dispersion 2) Tyndal effect 3) Persistence of vision |
|
Answer» Match the following statements with correct terms associated with it. A) Light makes tiny particles visible due to scattering. 1) Dispersion |
|
| 3. |
Brandon Stark saw some suspicious activity at the terrace of a tower. When he reached there, he saw some thieves and hurried back to tell his father. Accidentally, he fell from the top of the tower and landed on the ground exactly 2 seconds later. Find the height of the tower. g=10ms−2 |
|
Answer» Brandon Stark saw some suspicious activity at the terrace of a tower. When he reached there, he saw some thieves and hurried back to tell his father. Accidentally, he fell from the top of the tower and landed on the ground exactly 2 seconds later. Find the height of the tower. g=10ms−2 |
|
| 4. |
Define specific resistance. |
|
Answer» Define specific resistance. |
|
| 5. |
When I was eating chips, I noticed there very fine grains of spices on its surface. I tried to shake it off, but they weren't that easy to get rid of. I wondered whether this is a case of adsorption. I'm such a nerd huh. What do you think? |
|
Answer»
When I was eating chips, I noticed there very fine grains of spices on its surface. I tried to shake it off, but they weren't that easy to get rid of. |
|
| 6. |
When a moving particle charge can make a magnetic field, why a table or a chair can not? |
| Answer» When a moving particle charge can make a magnetic field, why a table or a chair can not? | |
| 7. |
In a step up transformer : (a) Ns=Np (b) Ns<Np (c) Ns>Np (d) nothing can be said. |
|
Answer» In a step up transformer : |
|
| 8. |
The diagram shows a solenoid carrying time varying current I=I0t. On the axis of this solenoid a ring has been placed. The mutual inductance of the ring and the solenoid is M and the self inductance of the ring is L. If the resistance of the ring is R, then the maximum current which can flow through the ring is equal to |
|
Answer» The diagram shows a solenoid carrying time varying current I=I0t. On the axis of this solenoid a ring has been placed. The mutual inductance of the ring and the solenoid is M and the self inductance of the ring is L. If the resistance of the ring is R, then the maximum current which can flow through the ring is equal to |
|
| 9. |
A toaster-oven is rated at 1.2−1.4 kW at 220 V. What should be the rating of the safety fuse in the oven? |
|
Answer» A toaster-oven is rated at 1.2−1.4 kW at 220 V. What should be the rating of the safety fuse in the oven? |
|
| 10. |
(a) How would you demonstrate that a momentary current can be obtained by the suitable use of a magnet, a coil of wire and a galvanometer ? (b) What is the source of energy associated with the current obtained in part (a) ? |
|
Answer» (a) How would you demonstrate that a momentary current can be obtained by the suitable use of a magnet, a coil of wire and a galvanometer ? |
|
| 11. |
A piece of written material appears raised by 7 mm when placed under a rectangular glass block of refractive index 1. 5. Find the thickness of the glass block. |
|
Answer» A piece of written material appears raised by 7 mm when placed under a rectangular glass block of refractive index 1. 5. Find the thickness of the glass block. |
|
| 12. |
Liquid A of specific heat capacity 0.84 J g−1 K−1 at a temperature of 50∘C is mixed with 200 g of a liquid B of specific heat capacity 2.1 J g−1 K−1 at 30∘C. The final temperature of the mixture becomes 42∘C. Find the mass of liquid A. |
|
Answer» Liquid A of specific heat capacity 0.84 J g−1 K−1 at a temperature of 50∘C is mixed with 200 g of a liquid B of specific heat capacity 2.1 J g−1 K−1 at 30∘C. The final temperature of the mixture becomes 42∘C. Find the mass of liquid A. |
|
| 13. |
Define Ohm's law and draw a graph for V-I. |
| Answer» Define Ohm's law and draw a graph for V-I. | |
| 14. |
A big convex lens is used between a bulb and wall to get an image of electric bulb placed on wall at a distance of 3m from opposite wall. What will be focal length of this lens that an image can be formed on wall ? |
| Answer» A big convex lens is used between a bulb and wall to get an image of electric bulb placed on wall at a distance of 3m from opposite wall. What will be focal length of this lens that an image can be formed on wall ? | |
| 15. |
The process by which a beam of white light splits into its constituent colours is known as_________. |
|
Answer» The process by which a beam of white light splits into its constituent colours is known as_________. |
|
| 16. |
Describe the proce of nuclear fission Explain process involved in generating electricity in nuclear powerplant |
| Answer» Describe the proce of nuclear fission Explain process involved in generating electricity in nuclear powerplant | |
| 17. |
what is the difference between myopia and presbyopia |
|
Answer» what is the difference between myopia and presbyopia |
|
| 18. |
What are the advantages of compact fluorescent lamp and arc lamp? |
|
Answer» What are the advantages of compact fluorescent lamp and arc lamp? |
|
| 19. |
What is the centrifugal force? |
|
Answer» What is the centrifugal force? |
|
| 20. |
Which of these are the characteristics of good sources of energy? |
|
Answer» Which of these are the characteristics of good sources of energy? |
|
| 21. |
What is the meaning of "intrinsic"? |
|
Answer» What is the meaning of "intrinsic"? |
|
| 22. |
What is the optical property of glass that is used to determine or characterise a glass fragment? |
|
Answer» What is the optical property of glass that is used to determine or characterise a glass fragment? |
|
| 23. |
Will we get earth if we were rubber slippers?why? |
|
Answer» Will we get earth if we were rubber slippers?why? |
|
| 24. |
What is eye lens composed of? |
|
Answer» What is eye lens composed of? |
|
| 25. |
Give two reasons why the efficiency of a single movable pulley system is not 100%. |
| Answer» Give two reasons why the efficiency of a single movable pulley system is not 100%. | |
| 26. |
How is the radius if the conductor affects the magnetic field produced |
| Answer» How is the radius if the conductor affects the magnetic field produced | |
| 27. |
State the two convenient rays that are chosen to construct the image by a spherical mirror for a given object ? Explain your answer with the help of suitable ray diagrams. |
|
Answer» State the two convenient rays that are chosen to construct the image by a spherical mirror for a given object ? Explain your answer with the help of suitable ray diagrams. |
|
| 28. |
What is the function of a commutator in an electric motor ? |
|
Answer» What is the function of a commutator in an electric motor ? |
|
| 29. |
If a combination of 3 convex lenses is arranged as shown above and the focal length of lens 1 is + 5 cm, lens II is 10 cm and lens III is 20 cm. Calculate the total power of the combination of lens. |
|
Answer»
If a combination of 3 convex lenses is arranged as shown above and the focal length of lens 1 is + 5 cm, lens II is 10 cm and lens III is 20 cm. Calculate the total power of the combination of lens. |
|
| 30. |
What do you understand by the term latent heat ? |
|
Answer» What do you understand by the term latent heat ? |
|
| 31. |
The focal length of a small concave mirror is 2.5 cm. In the distance of tooth from the mirror should be : (a) 2.5 cm (b) 1.5 cm (c) 4.5 cm (d) 3.5 cm |
|
Answer» The focal length of a small concave mirror is 2.5 cm. In the distance of tooth from the mirror should be : (a) 2.5 cm (b) 1.5 cm (c) 4.5 cm (d) 3.5 cm |
|
| 32. |
How is the current flowing in a conductor changed if the resistance of conductor is doubled keeping the potential difference across it the same? |
|
Answer» How is the current flowing in a conductor changed if the resistance of conductor is doubled keeping the potential difference across it the same? |
|
| 33. |
According to the kinetic theory of gases, in an ideal gas between two successive collisions, a gas molecule travels: |
|
Answer» According to the kinetic theory of gases, in an ideal gas between two successive collisions, a gas molecule travels: |
|
| 34. |
The greenhouse effect is the phenomenon in which _______ radiations of long wavelength is given out from the surface of the earth are absorbed by its atmosphere gases to keep the environment at the earth’s surface and its lower atmosphere, warm. |
|
Answer» The greenhouse effect is the phenomenon in which _______ radiations of long wavelength is given out from the surface of the earth are absorbed by its atmosphere gases to keep the environment at the earth’s surface and its lower atmosphere, warm. |
|
| 35. |
What are the three principal rays that are drawn to construct the ray diagram for the image formed by a lens ? Draw diagrams to support your answer. |
|
Answer» What are the three principal rays that are drawn to construct the ray diagram for the image formed by a lens ? Draw diagrams to support your answer. |
|
| 36. |
What do you mean by cryogenic hardening? |
|
Answer» What do you mean by cryogenic hardening? |
|
| 37. |
What is the correct meaning of three R's that are used to save the environment? |
|
Answer» What is the correct meaning of three R's that are used to save the environment? |
|
| 38. |
Identify the correct answer from the following options. |
|
Answer» Identify the correct answer from the following options. |
|
| 39. |
The north pole of a long bar magnet was pushed slowly into a short solenoid connected to a galvanometer. The magnet was held stationary for a few seconds with the north pole in the middle of the solenoid and then withdrawn rapidly. The maximum deflection of the galvanometer was observed when the magnet was : (a) moving towards the solenoid (b) moving into the solenoid (c) at rest inside the solenoid (d) moving out of the solenoid |
|
Answer» The north pole of a long bar magnet was pushed slowly into a short solenoid connected to a galvanometer. The magnet was held stationary for a few seconds with the north pole in the middle of the solenoid and then withdrawn rapidly. The maximum deflection of the galvanometer was observed when the magnet was : (a) moving towards the solenoid (b) moving into the solenoid (c) at rest inside the solenoid (d) moving out of the solenoid |
|
| 40. |
The Principle and Energy conversion involved in an AC Generator |
|
Answer» The Principle and Energy conversion involved in an AC Generator
|
|
| 41. |
Which diode is forward biased when point A is higher potential than point B in given figure? |
|
Answer» Which diode is forward biased when point A is higher potential than point B in given figure? |
|
| 42. |
If I build a turbine in a fast flowing stream of a river without building a dam.What kind of an energy conversion will happen for power generation? |
|
Answer» If I build a turbine in a fast flowing stream of a river without building a dam.What kind of an energy conversion will happen for power generation? |
|
| 43. |
Let's say a laboratory room has a very strong magnetic field acting upwards, i.e. towards the ceiling. An electron gun is fired along a line from one of the vertical walls to the opposite wall. It will? |
|
Answer» Let's say a laboratory room has a very strong magnetic field acting upwards, i.e. towards the ceiling. An electron gun is fired along a line from one of the vertical walls to the opposite wall. It will? |
|
| 44. |
The number of magnetic lines of force passing normally through a surface is called as? |
|
Answer» The number of magnetic lines of force passing normally through a surface is called as? |
|
| 45. |
For the damped oscillator shown, the mass m of the block is 200 g, k = 90 N m−1 and the damping constant b is 40 g s−1. What is the period of oscillation, time taken for its amplitude of vibrations to drop to half of its initial value. |
|
Answer» For the damped oscillator shown, the mass m of the block is 200 g, k = 90 N m−1 and the damping constant b is 40 g s−1. What is the period of oscillation, time taken for its amplitude of vibrations to drop to half of its initial value.
|
|
| 46. |
How could you show that the colours of the spectrum combine to give white light ? |
|
Answer» How could you show that the colours of the spectrum combine to give white light ? |
|
| 47. |
If the image formed is always virtual, the mirror can be : (a) concave or convex (b) concave or plane (c) convex or plane (d) only convex |
|
Answer» If the image formed is always virtual, the mirror can be : |
|
| 48. |
A sound wave having a wavelength of 2 cm is traveling in water. If the velocity of sound in water is 1600 m/s. Find the frequency of the sound wave. |
|
Answer» A sound wave having a wavelength of 2 cm is traveling in water. If the velocity of sound in water is 1600 m/s. Find the frequency of the sound wave. |
|
| 49. |
A current of 1.5 A flows through a conductor for 2.0 s. What amount of charge passes through the conductor? |
|
Answer» A current of 1.5 A flows through a conductor for 2.0 s. What amount of charge passes through the conductor? |
|
| 50. |
If the mass of a body is 10 kg and acceleration due to gravity at a place is 9.8 m s−2, then weight of body is . |
|
Answer» If the mass of a body is 10 kg and acceleration due to gravity at a place is 9.8 m s−2, then weight of body is |
|
