Basic Science Related Question

DoThe Best
By DoThe Best October 21, 2015 14:52

On a stationary sail boat, air is blown from a fan attached to the boat. The boat

A.moves in opposite direction in which the air is blown
B.does not move
C.moves in the same direction in which air blows
D.spins around

Answer: Option C

Rainbow is due to

A.absorption of sunlight in minute water droplets
B.diffusion of sunlight through water droplets
C.ionisation of water deposits
D.refraction and reflection of sunlight by water droplets

Answer: Option D

Stars which appear single to the naked eye but are double when seen through a telescope are

A.novas and supernovas

Answer: Option A

ML2T-2 is the dimensional formula for

A.moment of inertia
D.couple acting on a body

Answer: Option D

Liquid metal is

A. zinc
B. saline
C. lead
D. mercury


DoThe Best
By DoThe Best October 21, 2015 14:52
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