set 2 MCQ Questions & Answers Detailed Explanation

Question : 1

One micron represents a length of

a) 1 mm

b) $10^{-6}$ cm

c) $10^{-4}$ cm

d) 1 m

Question : 2

‘Joule’ is related to energy in the same way as ‘Pascal’ is related to

a) Density

b) Mass

c) Pressure

d) Purity

Question : 3

Which one of the following is not correctly matched?

a) Agnstrom - Unit of wavelength of light

b) Knot - Measure of speed of ship

c) Nautical mile - Unit of distance used in navigation

d) Light year - Unit of measuring time

Question : 4

Assertion :
Number of significant figures in 0.005 is one and that in 0.500 is three.
Reason :
This is because zeros are not significant.

a) If Assertion is correct but Reason is incorrect.

b) If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.

c) If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion.

d) If Assertion is incorrect but Reason is correct.

Question : 5

Pascal is a unit of measuring

a) Rainfall

b) Humidity

c) Pressure

d) Temperature

Question : 6

The SI unit of electrical resistance of conductor is

a) Ampere

b) Faraday

c) Volts

d) Ohm-metre