Question

1. What is the unit for measuring the amplitude of a sound?
(A) Decibel
(B) Coulomb
(C) Hum
(D) Cycles
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(A)
(B)
(C)
(D)
3. Light year is a measurement of
(A) Speed of aeroplanes
(B) Speed of light
(C) Stellar distances
(D) Speed of rockets
4. Length cannot be measured by
(A) Fermi
(B) Debye
(C) Micron
(D) Light year
5. Which of the following measurements is most precise?
(a) 5.00 mm
(b) 5.00 cm
(c) 5.00 m
(d) 5.00 km
Q.6
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(a)
(b)
(c)
(d)
Q.7
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(a)
(b)
(c)
(d)
Q.8
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(a)
(b)
(c)
(d)
9. The sum of the numbers 436.32, 227.2 and 0.301 in appropriate significant figures is
(a) 663.821
(b) 664
(c) 663.8
(d) 663.82
Q.10
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(a)
(b)
(c)
(d)
11. In a velocity time graph, velocity is proportional to time. It has got
(a) Increasing acceleration
(b) Decreasing acceleration
(c) Zero acceleration
(d) None of these.
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(a)
(b)
(c)
(d)
13. Which of the following statements is incorrect?
(a) A body can have constant speed but varying velocity
(b) A body can have constant velocity but varying speed
(c) A body can have acceleration without having velocity
(d) A body can have velocity without having acceleration
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(a)
(b)
(c)
(d)
Q.15
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(a)
(b)
(c)
(d)
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Answer 1

Answer:

1) decibles

3) stellar distances

4) debye

5) 5.00 mm

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Answer 2

Answer:

DECIBELS

3 IS C

4 is b

5 is a

9 is a

11 is a

13 is b

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