Units and Measurements Objective Type Questions and Answers

Questions

21 If radian correction is not considered in specific heat measurement. The measured value of specific heat will be

A more than its actual value.

B less than its actual value.

C remains same as actual value.

D none of these.

View Answer

Answer: more than its actual value.

22 If length of pendulum is increased by 2%. The time period will

A increases by 1%

B decreases by 1%

C increases by 2%

D decreases by 2%

View Answer

Answer: increases by 1%

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23 In case of measurement of ‘g’, if error in measurement of length of pendulum is 2%, the percentage error in time period is1 %. The maximum error in measurement of g is

A 1 %

B 2 %

C 4 %

D no error.

View Answer

Answer: 4 %

24 Dimensional formula of latent heat

A M0L2T-2

B MLT-2

C ML2T-2

D None of above

View Answer

Answer: M0L2T-2

25 The measurement of radius of a circle has error of 1%. The error in measurement of its area is

A 1%

B 2%

C 3%

D none of these

View Answer

Answer: 2%

26 The multiplication of 10.610 with 0.210 upto correct number of significant figure is

A 2.2281

B 2.228

C 2.22

D 2.2

View Answer

Answer: 2.228

27 If v stands for velocity of sound, E is elasticity and d the density, then find x in the equation v = (d/E)x

A 1

B ½

C 2

D -1/2

View Answer

Answer: -1/2

28 On the basis of dimensional equation, the maximum number of unknown that can be found, is

A one

B two

C three

D None of above.

View Answer

Answer: three

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