Pick out the scalar quantity

A) force
B) pressure
C) velocity
D) acceleration

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Light year is a unit of

A) time
B) distance
C) light
D) intensity of light

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Sound waves in air are

A) transverse
B) longitudinal
C) electromagnetic
D) polarised

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out of the following, which is not emitted by radioactive substance?

A) Electrons
B) Electromagnetic radiations
C) Alpha particles
D) Neutrons

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Let a thin capillary tube be replaced with another tube of insufficient length then, we find water

A) will overflow
B) will not rise
C) depressed
D) change its meniscus

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