Physics - Section 1 | Multiple Questions and Answers

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Physics - Section 1 Multiple Questions and Answers.

51.	Out of the following pairs, which one does not have identical dimension?

	A.	Moment of inertia and moment of a force
	B.	Work and Torque
	C.	Angular momentum and Planck's constant
	D.	Impulse and Momentum

52.	Mercury is commonly used as a thermometric fluid rather than water because

	A.	specific heat of mercury is less than water
	B.	specific heat of mercury is more than water
	C.	mercury has greater visibility than water
	D.	density of mercury is more than the water

53.	Optical fibre works on the

	A.	principle of refraction
	B.	total internal reflection
	C.	scattering
	D.	interference

54.	Light from the star, Alpha Centauri, which is nearest to the earth after the sun, reaches the earth in

	A.	4.2 seconds
	B.	42 seconds
	C.	4.2 years
	D.	42 years

55.	Supersonic plane fly with the speed

	A.	less than the speed of sound
	B.	of sound
	C.	greater than the speed of sound
	D.	of light

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