GENERAL SCIENCE (GENERAL STUDIES) Part-2

Total Questions: 50

31. The absolute refractive index of a medium depends on –

Correct Answer: (d) all of the above

32. A real image is formed by a convex mirror when the object is placed at –

Correct Answer: (d) none of the above

33. Ability of the eye to see objects at all distances is called –

Correct Answer: (d) Accommodation

34. The point where the rays from a point object meet after reflection through a lens is called the

Correct Answer: (a) focus

35. In the figure in previous question, the white screen is at the–

Correct Answer: (b) principal focus of the concave mirror

36. The length of a wire is doubled and the radius is doubled. By what factor does the resistance change–

Correct Answer: (d) half as large

37. Kilowatt-hour is the unit of –

Correct Answer: (c) electrical energy

38. An electric bulb is filled with –

Correct Answer: (d) nitrogen and argon

39. The unit of resistivity is –

Correct Answer: (c) ohm × m

40. If a wire is stretched to make its length three times, its resistance will become –

Correct Answer: (c) nine times