9th Physics Unit-1, Quiz-04 (Rs.12)

Student Quiz

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15

31. In screw gauge, the distance moved forward or backward in one complete rotation of the circular scale is known as:

(a) Least count (b) Pitch (c) Constant (d) None of above

32. A physical balance is used to measure:

(a) Weight (b) Volume (c) Length (d) Mass

33. Least count of mechanical stop watch is:

(a) 1 second (b) 1 minute (c) 0.1 second (d) 0.01 second

34. Least count of digital stop watch is:

(a) 1 second (b) 1 minute (c) 0.1 second (d) 0.01 second

35. In any measurement, the accurately known digits and first doubtful digit are known as:

(a) Prefixes (b) Significant figures (c) Real numbers (d) All

36. The radius of wire is 0.022 cm. The number of significant figures in the measurement are:

(a) 1 (b) 2 (c) 3 (d) 4

37. The number of significant figures in 1.406 are:

(a) 4 (b) 3 (c) 2 (d) 1

38. The number of significant figures in 1.40 x 10 are:

(a) 1 (b) 2 (c) 3 (d) 4

39. Vernier constant is also known as:

(a) Pitch (b) Proportionality constant (c) Least count (d) None of above

40. The zeros in between the digits are considered:

(a) Significant (b) Insignificant (c) Constant (d) None of above

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