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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 is the difference between magnetic intensity and magnetic flux? |
| Answer» What is the difference between magnetic intensity and magnetic flux? | |
| 2. |
72.A vibrating a body produce a Wave of wavelength 2.5 metres in a medium where the wave travels with a velocity of 1250 minutes per second power minus 1 find the |
| Answer» 72.A vibrating a body produce a Wave of wavelength 2.5 metres in a medium where the wave travels with a velocity of 1250 minutes per second power minus 1 find the | |
| 3. |
If the white colour light is falling on a blue coloured object then what colour is reflected back? |
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Answer» If the white colour light is falling on a blue coloured object then what colour is reflected back? |
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| 4. |
what is the effective focal length for 2 lenses with focal length f_1 and f_{2 }? |
| Answer» what is the effective focal length for 2 lenses with focal length f_1 and f_{2 }? | |
| 5. |
An electric bulb is rated (100 W,220 V). If it consumes 25 W power, then the applied voltage across the bulb is |
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Answer» An electric bulb is rated (100 W,220 V). If it consumes 25 W power, then the applied voltage across the bulb is |
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| 6. |
While calculating the focal length of a lens formula; what is different when the lens is immersed in or surrounded by some other medium than that of air? |
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Answer» While calculating the focal length of a lens formula; what is different when the lens is immersed in or surrounded by some other medium than that of air? |
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| 7. |
Write one use of wind energy (a) in the past (b) at present. |
| Answer» Write one use of wind energy (a) in the past (b) at present. | |
| 8. |
A lens having two spherical surfaces bulging outward is known as: |
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Answer» A lens having two spherical surfaces bulging outward is known as: |
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| 9. |
what is flux linkage |
| Answer» what is flux linkage | |
| 10. |
Which of the following is not the property of cathode rays? |
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Answer» Which of the following is not the property of cathode rays? |
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| 11. |
Out of the five incident rays shown in the figure find the three rays that are obeying the laws of refraction and may be used for locating the position of image formed by a convex lens |
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Answer» Out of the five incident rays shown in the figure find the three rays that are obeying the laws of refraction and may be used for locating the position of image formed by a convex lens
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| 12. |
What is spectrum? Draw a labelled diagram to show the formation of the spectrum. Name the various colors of the spectrum. |
| Answer» What is spectrum? Draw a labelled diagram to show the formation of the spectrum. Name the various colors of the spectrum. | |
| 13. |
76.A sphere of mass m is held between two smooth inclined walls AB and AC.The normal reaction between wall AB and sphere |
| Answer» 76.A sphere of mass m is held between two smooth inclined walls AB and AC.The normal reaction between wall AB and sphere | |
| 14. |
Find the magnetic field at the centre O of the loop shown in the figure. |
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Answer» Find the magnetic field at the centre O of the loop shown in the figure. |
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| 15. |
Explain the parts of a rocket. |
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Answer» Explain the parts of a rocket. |
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| 16. |
_____ is used as fuel in the nuclear reactor. |
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Answer» _____ is used as fuel in the nuclear reactor. |
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| 17. |
Electric field at far away distance r on the axis of a dipole is Eo. What is the electric field at a distance 2r on pependicular to bisector? |
| Answer» Electric field at far away distance r on the axis of a dipole is Eo. What is the electric field at a distance 2r on pependicular to bisector? | |
| 18. |
ratio of length of two copper wires is 1:2 and their resis†an ces are equal.find the ratio of their diameters |
| Answer» ratio of length of two copper wires is 1:2 and their resis†an ces are equal.find the ratio of their diameters | |
| 19. |
Water falls from a height of 100 m. Calculate the rise in temperature of water when it strikes the bottom. Given, Sw = 4200 Jkg−1 0C−1 and g = 10 m/s2. |
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Answer» Water falls from a height of 100 m. Calculate the rise in temperature of water when it strikes the bottom. Given, Sw = 4200 Jkg−1 0C−1 and g = 10 m/s2. |
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| 20. |
Why do stars seem higher than they actually are ? Illustrate your answer with the help of a diagram. |
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Answer» Why do stars seem higher than they actually are ? Illustrate your answer with the help of a diagram. |
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| 21. |
Name a source of fresh water. |
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Answer» Name a source of fresh water. |
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| 22. |
Statement 1: A positive work can increase the kinetic energy. Statement 2: A force does a positive work on an object when the displacement is in the direction of force itself. |
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Answer» Statement 1: A positive work can increase the kinetic energy. Statement 2: A force does a positive work on an object when the displacement is in the direction of force itself. |
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| 23. |
The speed of light in medium b is c3, where c= speed of light in vacuum and light refracts from medium a to medium b making angles 45∘ and 60∘ respectively with normal. The speed of light in medium a is |
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Answer» The speed of light in medium b is c3, where c= speed of light in vacuum and light refracts from medium a to medium b making angles 45∘ and 60∘ respectively with normal. The speed of light in medium a is |
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| 24. |
How to determine the direction of magnetic dipole moment of a closed loop if current flow is clockwise direction in the loop ? |
| Answer» How to determine the direction of magnetic dipole moment of a closed loop if current flow is clockwise direction in the loop ? | |
| 25. |
What is fleming's right hand rule? |
| Answer» What is fleming's right hand rule? | |
| 26. |
The rate of flow of electric charge is known as electric ___. |
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Answer» The rate of flow of electric charge is known as electric |
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| 27. |
Explain is solar power plant ? |
| Answer» Explain is solar power plant ? | |
| 28. |
A glass rod was rubbed with silk and was found to have +5micro coulomb of charge. How many electrons got transferred and from which material? |
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Answer» A glass rod was rubbed with silk and was found to have +5micro coulomb of charge. How many electrons got transferred and from which material? |
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| 29. |
White light is incident on the triangular face of the prism shown:Assuming the light emerges out of the other triangular face of the prism, what will be the colour of light visible at the other end? Give your reasons. |
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Answer» White light is incident on the triangular face of the prism shown:
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| 30. |
Which is the correct nuclear fusion reaction among the following? |
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Answer» Which is the correct nuclear fusion reaction among the following? |
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| 31. |
A ray of light falls on a glass slab of refractive index of root3. If the reflected and refracted rays are mutually ||lar, find the angle of incidence. |
| Answer» A ray of light falls on a glass slab of refractive index of root3. If the reflected and refracted rays are mutually ||lar, find the angle of incidence. | |
| 32. |
Why do we need potential difference |
| Answer» Why do we need potential difference | |
| 33. |
When a mirror is rotated through an angle θ, the reflected ray from it turns through an angle of |
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Answer» When a mirror is rotated through an angle θ, the reflected ray from it turns through an angle of |
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| 34. |
Identify the figures and explain their use. |
Answer» Identify the figures and explain their use.  
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| 35. |
If Z = A /A-B and A and B are measured with error *A and *B respectively then relative error in Z that is *Z /Z is equal to |
| Answer» If Z = A /A-B and A and B are measured with error *A and *B respectively then relative error in Z that is *Z /Z is equal to | |
| 36. |
Given below are figures of three kinds of muscle fibres. Which one/ones would you find in the grass hopper’s legs? |
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Answer» Given below are figures of three kinds of muscle fibres.
Which one/ones would you find in the grass hopper’s legs? |
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| 37. |
Split 10c charge which are separated at the distance 1m from each other so that force of replusion between them will be maximum |
| Answer» Split 10c charge which are separated at the distance 1m from each other so that force of replusion between them will be maximum | |
| 38. |
Hello Sir/Madam Can a machine act as force multiplier as well as speed multiplier simultaneously? Please explain why and provide examples Thanks n Regards Gopika |
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Answer» Hello Sir/Madam Can a machine act as force multiplier as well as speed multiplier simultaneously? Please explain why and provide examples Thanks n Regards Gopika |
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| 39. |
What is Scintillation? |
| Answer» What is Scintillation? | |
| 40. |
(a) An object 2 cm tall stands on the principal axis of a converging lens of focal length 8 cm. Find the position, nature and size of the image formed if the object is : (i) 12 cm from the lens (ii) 6 cm from the lens (b) State one practical application each of the use of such a lens with the object in position (i) and (ii). |
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Answer» (a) An object 2 cm tall stands on the principal axis of a converging lens of focal length 8 cm. Find the position, nature and size of the image formed if the object is : (i) 12 cm from the lens (ii) 6 cm from the lens (b) State one practical application each of the use of such a lens with the object in position (i) and (ii). |
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| 41. |
An electrical appliance of 500 W is used for 5 hours per day. Energy consumed in a day will be: |
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Answer» An electrical appliance of 500 W is used for 5 hours per day. Energy consumed in a day will be: |
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| 42. |
A body having 5 kg mass is travelling with a certain velocity and has 10 kgm/s momentum. What is its kinetic energy? |
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Answer» A body having 5 kg mass is travelling with a certain velocity and has 10 kgm/s momentum. What is its kinetic energy? |
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| 43. |
The density of vapour of a substance (X) at 1 atm pressure and 500 K is 0.8 kgm3. The vapour effuses through a small hole at a rate of 45 times slower than oxygen under the same condition. What is the compressibility factor (Z) of the vapour? |
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Answer» The density of vapour of a substance (X) at 1 atm pressure and 500 K is 0.8 kgm3. The vapour effuses through a small hole at a rate of 45 times slower than oxygen under the same condition. What is the compressibility factor (Z) of the vapour? |
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| 44. |
IF the heat dissipated in aresistor depends on its resis†an ce R current I through it anfsd the time t for which the current flows find the expressions for heat H dissipated |
| Answer» IF the heat dissipated in aresistor depends on its resis†an ce R current I through it anfsd the time t for which the current flows find the expressions for heat H dissipated | |
| 45. |
LiAlO4 me Al par charge kya hog |
| Answer» LiAlO4 me Al par charge kya hog | |
| 46. |
A convex lens is cut in half along its principal axis and the two halves are separated by a distance of 12 cm. An object is placed at a distance of 6 cm in front of one lens as shown in figure. Two sharp images are formed on the screen placed 80 cm from the object. The focal length of the lens (in cm),rounded to nearest ten is |
Answer» A convex lens is cut in half along its principal axis and the two halves are separated by a distance of 12 cm. An object is placed at a distance of 6 cm in front of one lens as shown in figure. Two sharp images are formed on the screen placed 80 cm from the object. The focal length of the lens (in cm),rounded to nearest ten is  |
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| 47. |
Nichrome is used in electric heating appliances because, ___. |
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Answer» Nichrome is used in electric heating appliances because, ___. |
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| 48. |
How to measure the intensity of a magnet? Like we can measure current using ammeter... |
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Answer» How to measure the intensity of a magnet? Like we can measure current using ammeter... |
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| 49. |
23.A football player kicks a ball at an angle of 37^° to the horizontal with an initial speed of 15 ms. Assuming that the ball travels in a vertical plane, 12 calculate (i) the time at which the ball reaches the highest point (ii) the maximum height reached (111) the horizontal range of the projectile and (iv) the time for which the ball is in air. |
| Answer» 23.A football player kicks a ball at an angle of 37^° to the horizontal with an initial speed of 15 ms. Assuming that the ball travels in a vertical plane, 12 calculate (i) the time at which the ball reaches the highest point (ii) the maximum height reached (111) the horizontal range of the projectile and (iv) the time for which the ball is in air. | |
| 50. |
The refractive index of air w.r.t. glass is expressed as gμa = sini/sinr If the angle r = 90o, what is the corresponding angle ‘i’ called ? |
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Answer» The refractive index of air w.r.t. glass is expressed as gμa = sini/sinr If the angle r = 90o, what is the corresponding angle ‘i’ called ? |
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