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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. |
State the characteristics of magnetic lines of force. |
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Answer» State the characteristics of magnetic lines of force. |
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| 2. |
The most heavily doped segment of a conductor is ___ . |
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Answer» The most heavily doped segment of a conductor is |
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| 3. |
To warn ships of underwater rocks, a light house spreads a red colored light over a sector of angle 80o to a distance of 16.5 km. The area of the sea over which the ships are warned is |
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Answer» To warn ships of underwater rocks, a light house spreads a red colored light over a sector of angle 80o to a distance of 16.5 km. The area of the sea over which the ships are warned is |
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| 4. |
61.Why is acceleration due to gravity 'g' decreases as increase in depth of Earth's surface ? |
| Answer» 61.Why is acceleration due to gravity 'g' decreases as increase in depth of Earth's surface ? | |
| 5. |
Give some harmful effects of combustion. |
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Answer» Give some harmful effects of combustion. |
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| 6. |
The focal length of a plano convex glass lens is 20 cm(μ_g=1.5) . The plane face of it is silvered. An illuminating object is placed at a dis†an ce of 60 cm from the lens on its axis along the convex side. Then the dis†an ce(in cm of the image is |
| Answer» The focal length of a plano convex glass lens is 20 cm(μ_g=1.5) . The plane face of it is silvered. An illuminating object is placed at a dis†an ce of 60 cm from the lens on its axis along the convex side. Then the dis†an ce(in cm of the image is | |
| 7. |
An electron is in the 3d orbital . write possible values of magnetic quantom numbers? |
| Answer» An electron is in the 3d orbital . write possible values of magnetic quantom numbers? | |
| 8. |
If three uniform spheres, each having mass M and radius R, are kept in such a way that each touches the other two, the magnitude of the gravitational force on any sphere due to the other two is |
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Answer» If three uniform spheres, each having mass M and radius R, are kept in such a way that each touches the other two, the magnitude of the gravitational force on any sphere due to the other two is |
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| 9. |
A lens forms an inverted image of an object. (a) Name the kind of lens. (b) State the nature of image whether real or virtual ? |
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Answer» A lens forms an inverted image of an object. (a) Name the kind of lens. (b) State the nature of image whether real or virtual ? |
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| 10. |
how does the magnetic compass show its north as the earth's north contradicting the law 'like poles repel and opposite poles repel'..... |
| Answer» how does the magnetic compass show its north as the earth's north contradicting the law 'like poles repel and opposite poles repel'..... | |
| 11. |
In a concave mirror is the distance from the object to the pole is negative or positive?? |
| Answer» In a concave mirror is the distance from the object to the pole is negative or positive?? | |
| 12. |
Which of the following components of light spectrum can have a possible wavelength of 30,000 pm? |
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Answer» Which of the following components of light spectrum can have a possible wavelength of 30,000 pm? |
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| 13. |
What will happen if in a compound microscope, the objective lens is larger in size and has a larger focal length? |
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Answer» What will happen if in a compound microscope, the objective lens is larger in size and has a larger focal length? |
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| 14. |
A body weighs 80 N on the surface of the earth. What is its weight at a height equal to radius of the earth? |
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Answer» A body weighs 80 N on the surface of the earth. What is its weight at a height equal to radius of the earth? |
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| 15. |
A resis†an ce of 40 Ω is connected to AC source of 220 V, 50 Hz. The time taken by the current to change from its maximum value to the rms value |
| Answer» A resis†an ce of 40 Ω is connected to AC source of 220 V, 50 Hz. The time taken by the current to change from its maximum value to the rms value | |
| 16. |
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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| 17. |
In a rocket , fuel burns at a rate of 2kg/s . this fuel gets ejected from the rocket with a velocity of 80km/s. force exerted on the rocket is ? |
| Answer» In a rocket , fuel burns at a rate of 2kg/s . this fuel gets ejected from the rocket with a velocity of 80km/s. force exerted on the rocket is ? | |
| 18. |
Professor Amartya Sen, a renowned academician and a Nobel laureate is famous for his work in- |
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Answer» Professor Amartya Sen, a renowned academician and a Nobel laureate is famous for his work in- |
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| 19. |
How does a electron travel almost with speed of light in a current carrying wire? |
| Answer» How does a electron travel almost with speed of light in a current carrying wire? | |
| 20. |
9.A wire of length l in the form of a square loop lies in a plane normal to a magnetic field B0. If this wire is converted into a circular loop in time,then find the average induced emf. |
| Answer» 9.A wire of length l in the form of a square loop lies in a plane normal to a magnetic field B0. If this wire is converted into a circular loop in time,then find the average induced emf. | |
| 21. |
a galvanometer of resis†an ce ,G is shunted by a resis†an ce S ohm. to keep main current in circuit unchanged, the resis†an ce to be put in series with galavanometer i |
| Answer» a galvanometer of resis†an ce ,G is shunted by a resis†an ce S ohm. to keep main current in circuit unchanged, the resis†an ce to be put in series with galavanometer i | |
| 22. |
Out of the two lenses, one concave and the other convex, state which one will show the divergent action on a light beam. Draw diagram to illustrate you answer. |
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Answer» Out of the two lenses, one concave and the other convex, state which one will show the divergent action on a light beam. Draw diagram to illustrate you answer. |
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| 23. |
Figure represents the paths of three particles moving in a uniform magnetic field. The magnetic field is directed downward perpendicular to the paper. State the nature of charge on particle B. |
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Answer» Figure represents the paths of three particles moving in a uniform magnetic field. The magnetic field is directed downward perpendicular to the paper. State the nature of charge on particle B.
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| 24. |
Focal length of a concave lens is 25 cm. Calculate its power. |
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Answer» Focal length of a concave lens is 25 cm. Calculate its power. |
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| 25. |
62. How to find number of electrons of a substance of one mole |
| Answer» 62. How to find number of electrons of a substance of one mole | |
| 26. |
A source of unknown frequency gives 4 beats/s when sounded with a source of known frequency 250 Hz. The second harmonic of the source ofunknown frequency gives five beats per second when sounded with a source of frequency 513Hz. The unknown frequency is (a) 254 Hz (b) 246 Hz (c) 240 Hz (d) 260 H |
| Answer» A source of unknown frequency gives 4 beats/s when sounded with a source of known frequency 250 Hz. The second harmonic of the source ofunknown frequency gives five beats per second when sounded with a source of frequency 513Hz. The unknown frequency is (a) 254 Hz (b) 246 Hz (c) 240 Hz (d) 260 H | |
| 27. |
how to be safe from fire if we are caught inside the house or outside the house |
| Answer» how to be safe from fire if we are caught inside the house or outside the house | |
| 28. |
If an object is projected from surface of earth with speed v=√6gT then interstellar speed of lf object is |
| Answer» If an object is projected from surface of earth with speed v=√6gT then interstellar speed of lf object is | |
| 29. |
two thin lenses of power +3.5D and -2.5D are placed in contact . fint the power and focal length of the lens combination |
| Answer» two thin lenses of power +3.5D and -2.5D are placed in contact . fint the power and focal length of the lens combination | |
| 30. |
A lens having two spherical surfaces bulging outward is called ______________. |
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Answer» A lens having two spherical surfaces bulging outward is called ______________. |
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| 31. |
Which of the following country is not correctly matched with their Global Navigation Satellite Systems? a. United States: Global Positioning System (GPS) b. Russia: GLONASS c. France: DORIS d. Japan: BeiDou |
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Answer» Which of the following country is not correctly matched with their Global Navigation Satellite Systems? a. United States: Global Positioning System (GPS) b. Russia: GLONASS c. France: DORIS d. Japan: BeiDou |
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| 32. |
A convex lens of power 5 D and a concave lens of power 7.5 D are placed in contact with each other. What is the:(a) Power of this combination of lenses?(b) Focal length of this combination of lenses ? |
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Answer» A convex lens of power 5 D and a concave lens of power 7.5 D are placed in contact with each other. What is the: |
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| 33. |
What do you mean by short circuiting? |
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Answer» What do you mean by short circuiting? |
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| 34. |
Q20. Consider the following statements about Pakal Dul Dam and Hydro Project: 1. It is a Project on the Marusadar River, a tributary of the Chenab River, in Kishtwar district of the Indian state of Jammu and Kashmir. 2. It will be the first-ever power project of the state with a storage capacity in 0.5 million acres of area. Which of the following statements are correct? |
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Answer» Q20. Consider the following statements about Pakal Dul Dam and Hydro Project: 1. It is a Project on the Marusadar River, a tributary of the Chenab River, in Kishtwar district of the Indian state of Jammu and Kashmir. 2. It will be the first-ever power project of the state with a storage capacity in 0.5 million acres of area. Which of the following statements are correct? |
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| 35. |
State the class of levers and the relative positions of load (L), effort (E) and fulcrum (F) in (a) a bottle opener, and (b) sugar tongs. |
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Answer» State the class of levers and the relative positions of load (L), effort (E) and fulcrum (F) in (a) a bottle opener, and (b) sugar tongs. |
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| 36. |
A force of 1 kg-wt acting on a mass of 9.8 kg produce an acceleration of ______ |
| Answer» A force of 1 kg-wt acting on a mass of 9.8 kg produce an acceleration of ______ | |
| 37. |
10 g of ice at 0∘C absorbs 5460 J of heat energy to melt and change t water at 50∘C. Calculate the specific latent heat of fusion of ice. (Specific heat capacity of water is 4200 J Kg−1K−1. |
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Answer» 10 g of ice at 0∘C absorbs 5460 J of heat energy to melt and change t water at 50∘C. Calculate the specific latent heat of fusion of ice. (Specific heat capacity of water is 4200 J Kg−1K−1. |
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| 38. |
A toaster produces more heat than a light bulb when connected in parallel to a 220V mains. Which one has a greater resistance. Please give detailed explanation. |
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Answer» A toaster produces more heat than a light bulb when connected in parallel to a 220V mains. Which one has a greater resistance. Please give detailed explanation. |
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| 39. |
Can an induced electric field exists at a point In space, when no magnetic field is present at that point? How? |
| Answer» Can an induced electric field exists at a point In space, when no magnetic field is present at that point? How? | |
| 40. |
Difference between wavefunction and square of wave function? |
| Answer» Difference between wavefunction and square of wave function? | |
| 41. |
A beam of unpolarised light passes through a tourmaline crystal A and then it passes through a tourmaline crystal B oriented so that its principal plane is parallel to that of A. the intensity of emergent light is I0. Now B is rotated by 45∘ about the ray. The emergent light will have intensity: |
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Answer» A beam of unpolarised light passes through a tourmaline crystal A and then it passes through a tourmaline crystal B oriented so that its principal plane is parallel to that of A. the intensity of emergent light is I0. Now B is rotated by 45∘ about the ray. The emergent light will have intensity: |
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| 42. |
3/4 kg of snacks is lifted to the treehouse to a distance of 44/5 m in 11/5 sec. What is the speed in m/s?4 |
Answer» 3/4 kg of snacks is lifted to the treehouse to a distance of 44/5 m in 11/5 sec. What is the speed in m/s?
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| 43. |
How much is our field of view : (a) with one eye open ? (b) with both eyes open ? |
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Answer» How much is our field of view : (a) with one eye open ? (b) with both eyes open ? |
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| 44. |
For solving sums, we are supposed to take first focus or second focus of the lens |
| Answer» For solving sums, we are supposed to take first focus or second focus of the lens | |
| 45. |
A torch bulb is rated 5v and 500mA calculate it's 1.power 2.Resistance 3.Energy consumed when it is lighted for 6 hours everyday. |
| Answer» A torch bulb is rated 5v and 500mA calculate it's 1.power 2.Resistance 3.Energy consumed when it is lighted for 6 hours everyday. | |
| 46. |
Why can you not use a concave mirror as a rear view mirror in vehicles? |
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Answer» Why can you not use a concave mirror as a rear view mirror in vehicles? |
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| 47. |
a convex lens of power 6 diaptre is placed is contact with a concave lens of power -4 diaoptre what will be the nature and focal length of this combination |
| Answer» a convex lens of power 6 diaptre is placed is contact with a concave lens of power -4 diaoptre what will be the nature and focal length of this combination | |
| 48. |
For the following baseball bat, where should we keep the fulcrum so as to balance it in a horizontal condition? |
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Answer» For the following baseball bat, where should we keep the fulcrum so as to balance it in a horizontal condition?
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| 49. |
Liquification of gaseous substances whose critical temperatures are below room temperature requires ____. |
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Answer» Liquification of gaseous substances whose critical temperatures are below room temperature requires ____. |
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| 50. |
67.Calculate the electric flux through the closed surface that consists of hemisphere and the planar circle. |
| Answer» 67.Calculate the electric flux through the closed surface that consists of hemisphere and the planar circle. | |
