Pick out the scalar quantity

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

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Nuclear sizes are expressed in a unit named.

A) Fermi
B) angstrom
C) newton
D) tesla

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Rectifiers are used to convert

A) Direct current to Alternating current
B) Alternating current to Direct current
C) high voltage to low voltage
D) low voltage to high voltage

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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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