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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. |
Write the SI unit of:(i) Amount of heat(ii) Heat capacity(iii) Specific Heat capacity |
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Answer» Write the SI unit of: (i) Amount of heat (ii) Heat capacity (iii) Specific Heat capacity |
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| 2. |
We always use a convex mirror as the rear view mirror. What is/are the reason(s) for this? |
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Answer» We always use a convex mirror as the rear view mirror. What is/are the reason(s) for this? |
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| 3. |
What did Newton demonstrate by his experiments with the prism ? |
| Answer» What did Newton demonstrate by his experiments with the prism ? | |
| 4. |
The work done to move a particle from a point (1,1) to (2,3) in a region of potential U = k (x + y) is |
| Answer» The work done to move a particle from a point (1,1) to (2,3) in a region of potential U = k (x + y) is | |
| 5. |
What is the value of electron gain enthalpy of Na\ast ifIE, of Na 5.1 eV?(1) +2.55 eV\lbrack AIPMT (Mains)-2011\rbrack(2) +10.2 eV N(3) -5.1 eV(4) -10.2 eV |
| Answer» What is the value of electron gain enthalpy of Na\ast ifIE, of Na 5.1 eV?(1) +2.55 eV\lbrack AIPMT (Mains)-2011\rbrack(2) +10.2 eV N(3) -5.1 eV(4) -10.2 eV | |
| 6. |
When a galvanometer is shunted with a 4 Ω resistance, the deflection is reduced to one-fifth. If the galvanometer is further shunted with a 2 Ω wire, determine current in galvanometer now if initially current in galvanometer is I0. (Given: Main current remains same) |
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Answer» When a galvanometer is shunted with a 4 Ω resistance, the deflection is reduced to one-fifth. If the galvanometer is further shunted with a 2 Ω wire, determine current in galvanometer now if initially current in galvanometer is I0. (Given: Main current remains same) |
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| 7. |
BOon temain the same43, in the circuit shown, the current through the 4 Ω resistor is 1 A when the points P and M areconnected to a d.c, voltage source. The potentialdifference between the points M and N is4 93Ω 0.5 Ω 1S20.5 Ω (1) 3.2 v(3) 1.0 V\lbrack A IPMT (Prelims)-2008\rbrack(2) 1.5 V(4) 0.5 v |
| Answer» BOon temain the same43, in the circuit shown, the current through the 4 Ω resistor is 1 A when the points P and M areconnected to a d.c, voltage source. The potentialdifference between the points M and N is4 93Ω 0.5 Ω 1S20.5 Ω (1) 3.2 v(3) 1.0 V\lbrack A IPMT (Prelims)-2008\rbrack(2) 1.5 V(4) 0.5 v | |
| 8. |
Define the term efficiency of a machine. Give two reasons for a machine not to be 100% efficient? |
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Answer» Define the term efficiency of a machine. Give two reasons for a machine not to be 100% efficient? |
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| 9. |
"The resistance of a wire is 1 ohm. Explain the meaning of this statement. |
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Answer» "The resistance of a wire is 1 ohm. Explain the meaning of this statement. |
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| 10. |
how does a split ring work and what is its function? |
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Answer» how does a split ring work and what is its function? |
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| 11. |
The Bob of a simple pendulum executes SHM in water with a period t, while the period of oscillation of Bob is 2s in air. Neglecting frictional force of water and given that the density of Bob is 9000/8 kg/m^3, the value of t is… |
| Answer» The Bob of a simple pendulum executes SHM in water with a period t, while the period of oscillation of Bob is 2s in air. Neglecting frictional force of water and given that the density of Bob is 9000/8 kg/m^3, the value of t is… | |
| 12. |
A longitudinal wave travels through a coiled spring at a speed of 4 ms−1. The distance between two consecutive compression is 20 cm. Find the frequency of the wave? |
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Answer» A longitudinal wave travels through a coiled spring at a speed of 4 ms−1. The distance between two consecutive compression is 20 cm. Find the frequency of the wave? |
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| 13. |
What is ohm's law? Explain how it is used to define the unit of resistance. |
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Answer» What is ohm's law? Explain how it is used to define the unit of resistance. |
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| 14. |
14.Two lenses one of focal length 20 cm (Convex lens) and another of focal length -15 cm (concave lens) are placed in contact.Find the power of combination of lens. |
| Answer» 14.Two lenses one of focal length 20 cm (Convex lens) and another of focal length -15 cm (concave lens) are placed in contact.Find the power of combination of lens. | |
| 15. |
Calculate the ratio of maximum wavelength of Lyman and Balmer series ? |
| Answer» Calculate the ratio of maximum wavelength of Lyman and Balmer series ? | |
| 16. |
34. How many even positive divisors of 7000000 |
| Answer» 34. How many even positive divisors of 7000000 | |
| 17. |
Q.an electric cell does 5 joule of work in carrying 10 coulomb of charge around a closed electric circuit . the electromotive force of cell is |
| Answer» Q.an electric cell does 5 joule of work in carrying 10 coulomb of charge around a closed electric circuit . the electromotive force of cell is | |
| 18. |
A current of 3 A flows through the 2 Ω resistor shown in the circuit. The power dissipated in the 5 Ω resistor is[1 Mark] |
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Answer» A current of 3 A flows through the 2 Ω resistor shown in the circuit. The power dissipated in the 5 Ω resistor is |
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| 19. |
34.In an isolated parallel plate capacitor the electric charges on the surfaces of the plates are Q1, Q2 ,Q3and Q4 as shown in figure. If the capacitance is C. What is the potential difference between the plates ? |
| Answer» 34.In an isolated parallel plate capacitor the electric charges on the surfaces of the plates are Q1, Q2 ,Q3and Q4 as shown in figure. If the capacitance is C. What is the potential difference between the plates ? | |
| 20. |
Question 3Name the mirror that can give an erect and enlarged image of an object. |
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Answer» Question 3 Name the mirror that can give an erect and enlarged image of an object. |
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| 21. |
Which of the following equations correctly expresses emission of beta particle? |
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Answer» Which of the following equations correctly expresses emission of beta particle? |
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| 22. |
The mains supply of a house is through a 2A fuse. How many 50W bulbs can be used in this house at the normal voltage. |
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Answer» The mains supply of a house is through a 2A fuse. How many 50W bulbs can be used in this house at the normal voltage. |
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| 23. |
When we say a wire is stretched to double it's length and when we say that the length of the wire is doubled what does it mean?? |
| Answer» When we say a wire is stretched to double it's length and when we say that the length of the wire is doubled what does it mean?? | |
| 24. |
Assuming that neon has an atomic radius of 70 pm. Calculate the mean free time for Neon at STP. (M for Neon = 20.18 g/mol) |
| Answer» Assuming that neon has an atomic radius of 70 pm. Calculate the mean free time for Neon at STP. (M for Neon = 20.18 g/mol) | |
| 25. |
1.a.Define the term resistivity. b. What is earth wire c. What is electromagnetic induction hey |
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Answer» 1.a.Define the term resistivity. b. What is earth wire c. What is electromagnetic induction hey |
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| 26. |
How many chocolates can be made by freezing 240 ml of chocolate syrup into chocolate bars if the volume of each chocolate bar is 12 cu cm? |
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Answer» How many chocolates can be made by freezing 240 ml of chocolate syrup into chocolate bars if the volume of each chocolate bar is 12 cu cm? |
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| 27. |
Is heat a form of energy or a form of matter? |
| Answer» Is heat a form of energy or a form of matter? | |
| 28. |
Calculate the focal length of one of the thin lenses if the resultant focal length is 5 cm, and one lens has a focal length 10 cm used to minimize the chromatic aberration. |
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Answer» Calculate the focal length of one of the thin lenses if the resultant focal length is 5 cm, and one lens has a focal length 10 cm used to minimize the chromatic aberration. |
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| 29. |
A block of mass 'm' is initially lying on a wedge of mass 'M' with an angle of inclination θ, as shown in the figure. The displacement of the wedge when the block is released and reaches to the bottom of the wedge is |
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Answer» A block of mass 'm' is initially lying on a wedge of mass 'M' with an angle of inclination θ, as shown in the figure. The displacement of the wedge when the block is released and reaches to the bottom of the wedge is
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| 30. |
how does presbyopia occurs |
| Answer» how does presbyopia occurs | |
| 31. |
What type of fuel are petroleum and coal? __ |
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Answer» What type of fuel are petroleum and coal? |
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| 32. |
Potential difference between Gand H |
| Answer» Potential difference between Gand H | |
| 33. |
Find current i in the given circuit is- |
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Answer» Find current i in the given circuit is- |
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| 34. |
Four conducting wires are con nected in parallel . The ratio of their lengths id 4:3:2:1. The ratio of current flowing through them would be? |
| Answer» Four conducting wires are con nected in parallel . The ratio of their lengths id 4:3:2:1. The ratio of current flowing through them would be? | |
| 35. |
The direction of rotation of a motor remains unchanged if ___. |
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Answer» The direction of rotation of a motor remains unchanged if ___. |
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| 36. |
29. If first ionization potential of an atom is 36V, then second excitation potential will be |
| Answer» 29. If first ionization potential of an atom is 36V, then second excitation potential will be | |
| 37. |
If focal length of a spherical mirror is 20 cm, then its radius of curvature is equal to |
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Answer» If focal length of a spherical mirror is 20 cm, then its radius of curvature is equal to |
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| 38. |
Monochromatic light refers to light that has: |
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Answer» Monochromatic light refers to light that has: |
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| 39. |
A convex lens is made-up of two different material. How many image will it form when object is kept in front of it? |
Answer» A convex lens is made-up of two different material. How many image will it form when object is kept in front of it? |
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| 40. |
53.Two sounds are heard at the end of an iron rod 5km long at an interval of 14 seconds when a source of sound is placed at the other end of the rod the velocity of air is 330m/s the velocity of sound in iron is approximately |
| Answer» 53.Two sounds are heard at the end of an iron rod 5km long at an interval of 14 seconds when a source of sound is placed at the other end of the rod the velocity of air is 330m/s the velocity of sound in iron is approximately | |
| 41. |
Electricity and magnetism are said to be inter-related to each other. A current carrying conductor has a magnetic field around it. So, when a compass is brought near to it, we can observe a deflection in the compass. Similarly, a battery is the source of the electric current. What will be the deflection, when we bring a compass near a 3 V cell (battery)? |
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Answer» Electricity and magnetism are said to be inter-related to each other. A current carrying conductor has a magnetic field around it. So, when a compass is brought near to it, we can observe a deflection in the compass. Similarly, a battery is the source of the electric current. What will be the deflection, when we bring a compass near a 3 V cell (battery)? |
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| 42. |
For a system having transfer function G(s)=−s+1s+1, a unit step input is applied at time t=0. The value of the response of the system of t=1.5 sec(rounded off to three decimal places ) is . |
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Answer» For a system having transfer function G(s)=−s+1s+1, a unit step input is applied at time t=0. The value of the response of the system of t=1.5 sec(rounded off to three decimal places ) is |
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| 43. |
How many identical 2 volts bulb can be safely connected to a 220 volt supply.explain with the help of a circuit diagram |
| Answer» How many identical 2 volts bulb can be safely connected to a 220 volt supply.explain with the help of a circuit diagram | |
| 44. |
A uniform chain of length 2m is held on a smooth horizontal table so that half of it hangs over the edge. If it is released from rest, the velocity with which it leaves the table will be nearest to |
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Answer» A uniform chain of length 2m is held on a smooth horizontal table so that half of it hangs over the edge. If it is released from rest, the velocity with which it leaves the table will be nearest to |
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| 45. |
A ray is incident from glass on the boundary separating glass and water. Refractive index for glass is 32 and refractive index for water is 43. The critical angle for the glass-water boundary is |
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Answer» A ray is incident from glass on the boundary separating glass and water. Refractive index for glass is 32 and refractive index for water is 43. The critical angle for the glass-water boundary is |
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| 46. |
A 50 kW, 120 V, long shunt compound generator is supplying a load at its maximum efficiency and the rated voltage. Armature resistance is 50 mΩ, series field resistance is 20 mΩ, shunt field resistance is 40 Ω, rotational loss is 2 kW. The maximum efficiency of the generator is _____ %82.35 |
Answer» A 50 kW, 120 V, long shunt compound generator is supplying a load at its maximum efficiency and the rated voltage. Armature resistance is 50 mΩ, series field resistance is 20 mΩ, shunt field resistance is 40 Ω, rotational loss is 2 kW. The maximum efficiency of the generator is _____ %
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| 47. |
The electric resistance of an open circuit is A). Infinity B) zero C) negative D) some times +ve sometimes. -ve |
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Answer» The electric resistance of an open circuit is A). Infinity B) zero C) negative D) some times +ve sometimes. -ve |
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| 48. |
Distinguish between resistance and resistivity. |
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Answer» Distinguish between resistance and resistivity. |
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| 49. |
Formula of generated energy with example |
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Answer» Formula of generated energy with example |
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| 50. |
Find the new focal length of a convex lens of focal length 20 cm and refractive index 1.5 when it is immersed in water.[refractive index of the water is 43] |
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Answer» Find the new focal length of a convex lens of focal length 20 cm and refractive index 1.5 when it is immersed in water. |
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