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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. |
A ball of mass 10 g is dropped from a certain height. At 50 m height, its KE is equal to its PE. Calculate its PE at the topmost point and TE midway. |
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Answer» A ball of mass 10 g is dropped from a certain height. At 50 m height, its KE is equal to its PE. Calculate its PE at the topmost point and TE midway. |
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| 2. |
Explain the case study of Kolleru lake. |
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Answer» Explain the case study of Kolleru lake. |
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| 3. |
State the principle of AC generator. |
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Answer» State the principle of AC generator. |
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| 4. |
Define refractive index? Mention its SI unit, if any. |
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Answer» Define refractive index? Mention its SI unit, if any. |
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| 5. |
If L is the angular momentum of a satellite revolvingaround earth is a circular orbit of radius r withspeed v, then(1) Loc v(2) L ocrOX(3) Loe r(4) L o V |
| Answer» If L is the angular momentum of a satellite revolvingaround earth is a circular orbit of radius r withspeed v, then(1) Loc v(2) L ocrOX(3) Loe r(4) L o V | |
| 6. |
In human eye, the power of accommodation is controlled by: |
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Answer» In human eye, the power of accommodation is controlled by: |
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| 7. |
Differentiate b/w absolute refraction and refraction. |
| Answer» Differentiate b/w absolute refraction and refraction. | |
| 8. |
assertion: A solenoid tends to expand. When current passes through it.Reason : Two straight parallel metallic wirescarrying current in same direction repel eachother |
| Answer» assertion: A solenoid tends to expand. When current passes through it.Reason : Two straight parallel metallic wirescarrying current in same direction repel eachother | |
| 9. |
36.A deuteron of kinetic energy 50 KeV is describing a circular orbit of radius 0.5 metre in a plane perpendicular to the magnetic field B . The kinetic energy of the proton that describes a circular orbit of radius 0.5 metre on the same plane with the same B is .? |
| Answer» 36.A deuteron of kinetic energy 50 KeV is describing a circular orbit of radius 0.5 metre in a plane perpendicular to the magnetic field B . The kinetic energy of the proton that describes a circular orbit of radius 0.5 metre on the same plane with the same B is .? | |
| 10. |
The frequency range of visible light is from 3.75×1014Hz to 7.5×10−14 Hz. Calculate its wavelength range. Take speed of light = 3×108ms−1 |
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Answer» The frequency range of visible light is from 3.75×1014Hz to 7.5×10−14 Hz. Calculate its wavelength range. Take speed of light = 3×108ms−1 |
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| 11. |
Light of two colours A and B pass through a glass prism A devities more than B from its path of incidence which colour has a higher speed in the prism |
| Answer» Light of two colours A and B pass through a glass prism A devities more than B from its path of incidence which colour has a higher speed in the prism | |
| 12. |
Why does a bulb when connected to a battery glows but not the wire connecting the two? |
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Answer» Why does a bulb when connected to a battery glows but not the wire connecting the two? |
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| 13. |
in displacement method we use a lens of focal length f and dis†an ce between pbject and screen is 60cm possible value for focal length (1)-15cm (2) 30cm (3) 12cm (4) 20c |
| Answer» in displacement method we use a lens of focal length f and dis†an ce between pbject and screen is 60cm possible value for focal length (1)-15cm (2) 30cm (3) 12cm (4) 20c | |
| 14. |
The X−Z plane separates two media A and B of refractive indices μA=1.5 and μB=2. A ray of light travels from A to B, its direction in two media are given by unit vectors. ^uA=a^i+b^j and ^uB=c^i+d^j respectively, then |
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Answer» The X−Z plane separates two media A and B of refractive indices μA=1.5 and μB=2. A ray of light travels from A to B, its direction in two media are given by unit vectors. ^uA=a^i+b^j and ^uB=c^i+d^j respectively, then |
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| 15. |
What is full form of 4 R's ? |
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Answer» What is full form of 4 R's ? |
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| 16. |
Which is refracted most by a prism : red light or violet light ? Explain why ? |
| Answer» Which is refracted most by a prism : red light or violet light ? Explain why ? | |
| 17. |
The ratio of the magnetic field at the centre of a current carrying circular wire and the magnetic field at the centre of a square coil, made from the same length of wire will be |
| Answer» The ratio of the magnetic field at the centre of a current carrying circular wire and the magnetic field at the centre of a square coil, made from the same length of wire will be | |
| 18. |
If an object of height 2cmis placed at a distance of twice the focal length of the convex lens, determine the position of the image,its nature and height. |
| Answer» If an object of height 2cmis placed at a distance of twice the focal length of the convex lens, determine the position of the image,its nature and height. | |
| 19. |
what is wave function and how to represent it? |
| Answer» what is wave function and how to represent it? | |
| 20. |
A beam of natural light falls on a system of 5 polaroids which are arranged in succession such that the pass axis of each polaroid is turned through 60∘ with respect to the preceding one. The fraction of the incident light intensity that emerges through the system is, |
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Answer» A beam of natural light falls on a system of 5 polaroids which are arranged in succession such that the pass axis of each polaroid is turned through 60∘ with respect to the preceding one. The fraction of the incident light intensity that emerges through the system is, |
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| 21. |
Is there any other metal except soft iron which can be used to make electromagnet? |
| Answer» Is there any other metal except soft iron which can be used to make electromagnet? | |
| 22. |
Which current is used to store in power stations and why are they preferred so? |
| Answer» Which current is used to store in power stations and why are they preferred so? | |
| 23. |
Two coils are having magnetic field B and 2B at their centres and current i and 2i, then the ratio of their radius is |
| Answer» Two coils are having magnetic field B and 2B at their centres and current i and 2i, then the ratio of their radius is | |
| 24. |
What is the minimum resistance which can be made using five resistors each of 15Ω? |
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Answer» What is the minimum resistance which can be made using five resistors each of 15Ω? |
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| 25. |
A man is standing on a plank of weight 100 kgf pivoted at A and B as shown in figure. If the reaction force by pivot B is 66 kgf, find the weight of the man. |
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Answer» A man is standing on a plank of weight 100 kgf pivoted at A and B as shown in figure. If the reaction force by pivot B is 66 kgf, find the weight of the man. |
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| 26. |
Two square metal plates A and B are of the same thickness and material. The side of B is twice of that of A. These are connected as shown in figure (series connection). If RA and RB are the resistances of A and B, respectively, then RA/RB is |
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Answer» Two square metal plates A and B are of the same thickness and material. The side of B is twice of that of A. These are connected as shown in figure (series connection). If RA and RB are the resistances of A and B, respectively, then RA/RB is |
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| 27. |
Phase difference between two particles of a medium lying just on the crest and adjacent trough of a wave, is how much |
| Answer» Phase difference between two particles of a medium lying just on the crest and adjacent trough of a wave, is how much | |
| 28. |
Two points B and C are such that length of AB and BC is l1 and l2 respectively are placed inside an infinite solenoid as shown in figure. The current through solenoid is varying with time. Line AB and BC are in plane perpendicular to solenoid axis. If strength of induced electric field at B and C are same then value of θ, is(Given : 11+l2< radius of solenoid. And Point A is centre of the cross-sectional area). |
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Answer» Two points B and C are such that length of AB and BC is l1 and l2 respectively are placed inside an infinite solenoid as shown in figure. The current through solenoid is varying with time. Line AB and BC are in plane perpendicular to solenoid axis. If strength of induced electric field at B and C are same then value of θ, is |
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| 29. |
What is the magnetic flux INSIDE a wire assuming it to be cylinder? |
| Answer» What is the magnetic flux INSIDE a wire assuming it to be cylinder? | |
| 30. |
Why is water used to cool the radiators of engines? |
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Answer» Why is water used to cool the radiators of engines? |
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| 31. |
The energy absorbed by each molecule of B2 is2.2 × 10–18 J and bond energy per molecule of B2is 2 × 10–18 J. The kinetic energy of the moleculeper atom will be(1) 1 × 10–18 J (2) 2 × 10–19 J(3) 2 × 10–20 J (4) 1 × 10–19 J |
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Answer» The energy absorbed by each molecule of B2 is 2.2 × 10–18 J and bond energy per molecule of B2 is 2 × 10–18 J. The kinetic energy of the molecule per atom will be (1) 1 × 10–18 J (2) 2 × 10–19 J (3) 2 × 10–20 J (4) 1 × 10–19 J |
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| 32. |
Which part of the solar cooker is responsible for green house effect? |
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Answer» Which part of the solar cooker is responsible for green house effect? |
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| 33. |
The self inductance of an equilateral triangular coil having N number of turns as shown in the figure |
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Answer» The self inductance of an equilateral triangular coil having N number of turns as shown in the figure |
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| 34. |
Which of the following points can be attributed as a reason for deviation of apparent position of a star from its actual position? |
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Answer» Which of the following points can be attributed as a reason for deviation of apparent position of a star from its actual position? |
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| 35. |
A convergent lens of power 16 D is used as a simple microscope. The magnification produced by this lens, when the final image is formed at least distance of distinct vision is |
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Answer» A convergent lens of power 16 D is used as a simple microscope. The magnification produced by this lens, when the final image is formed at least distance of distinct vision is |
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| 36. |
Two plane mirrors are placed parallel to each other. A man is standing at the mid-point of the distance between these two mirrors. Find the number of images formed. (Mirrors are kept symmetrically) [Distance between mirror is 100 cm] |
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Answer» Two plane mirrors are placed parallel to each other. A man is standing at the mid-point of the distance between these two mirrors. Find the number of images formed. (Mirrors are kept symmetrically) [Distance between mirror is 100 cm] |
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| 37. |
14. How much positive charges is there in a cup of water whose base area is 18 cm² and height is 20 cm? |
| Answer» 14. How much positive charges is there in a cup of water whose base area is 18 cm² and height is 20 cm? | |
| 38. |
At time t=0, a battery of 10 V is connected across point A and B in the given circuit. If the capacitors have no charge initially, the time (in seconds) at which the voltage across them becomes 4 V is (answer upto two decimal places)[Take ln5=1.6 , ln3=1.1] |
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Answer» At time t=0, a battery of 10 V is connected across point A and B in the given circuit. If the capacitors have no charge initially, the time (in seconds) at which the voltage across them becomes 4 V is (answer upto two decimal places) [Take ln5=1.6 , ln3=1.1]  |
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| 39. |
19. Freezing point of 100 g water decreases by 0.15^° C when 1 g monobasic acid is added in water. If 60 m of N / 20 NaOH is required for the complete neutralization of 0.5 g of the same acid, then the degree of dissociation of acid will be (Kf for water = 1.86 K/molal) |
| Answer» 19. Freezing point of 100 g water decreases by 0.15^° C when 1 g monobasic acid is added in water. If 60 m of N / 20 NaOH is required for the complete neutralization of 0.5 g of the same acid, then the degree of dissociation of acid will be (Kf for water = 1.86 K/molal) | |
| 40. |
42.The maximum value of index of refraction of a material of prism which allow the passage of light through it when refracting angle of prism is A is |
| Answer» 42.The maximum value of index of refraction of a material of prism which allow the passage of light through it when refracting angle of prism is A is | |
| 41. |
The boiling point of liquid ______ with an increase in pressure. |
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Answer» The boiling point of liquid ______ with an increase in pressure. |
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| 42. |
22. the resistance of each resistor is 10.find equivalent resistance between S and M |
| Answer» 22. the resistance of each resistor is 10.find equivalent resistance between S and M | |
| 43. |
ntTwo identical cells whether connected together in series or parallel gives same amount of current when connectede to 2ohm external resistance.The internal resistance r is?n |
| Answer» ntTwo identical cells whether connected together in series or parallel gives same amount of current when connectede to 2ohm external resistance.The internal resistance r is?n | |
| 44. |
A thin convex lens forms the distinct image of anobject on a screen placed at a distance of 30 cm fromthe lens. When the lens is displaced 5 cm towardsthe screen, then in order to obtain distinct image thescreen is displaced 5 cm towards the lens. Find focal length of lens |
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Answer» A thin convex lens forms the distinct image of an object on a screen placed at a distance of 30 cm from the lens. When the lens is displaced 5 cm towards the screen, then in order to obtain distinct image the screen is displaced 5 cm towards the lens. Find focal length of lens |
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| 45. |
If a wire of resistance 10 ohm is cut along its length such that its diameter becomes have what will be the new resistance.Solve By :- n²r formula |
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Answer» If a wire of resistance 10 ohm is cut along its length such that its diameter becomes have what will be the new resistance. Solve By :- n²r formula |
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| 46. |
What is tension and how to calculate it? |
| Answer» What is tension and how to calculate it? | |
| 47. |
What is isotopes and isobars? |
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Answer» What is isotopes and isobars? |
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| 48. |
Focal length of the plano-convex lens is when its radius of curvature of the surface isR and n is the refractive index of the lens. |
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Answer» Focal length of the plano-convex lens is R and n is the refractive index of the lens. |
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| 49. |
A plano-convex lens is made of glass of refractive index 1.5. The radius of curvature of its convex surface is R. Its focal length is ___. |
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Answer» A plano-convex lens is made of glass of refractive index 1.5. The radius of curvature of its convex surface is R. Its focal length is |
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| 50. |
The vector diagram of the current and voltage in a given circuit is shown in the figure. The components of the circuit will be |
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Answer» The vector diagram of the current and voltage in a given circuit is shown in the figure. The components of the circuit will be |
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