Basic Science Related Question

DoThe Best
By DoThe Best February 4, 2016 15:12

Basic Science Related Question

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

Answer: Option D

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

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

Answer: Option D

Sound waves in air are

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

Answer: Option D

Magnetism at the centre of a bar magnet is

A.minimum
B.maximum
C.zero
D.minimum or maximum

Answer: Option D

It is more difficult to walk on a sandy road than on a concrete road because

A.sand is soft and concreter is hard
B.the friction between sand and feet is less than that between concrete and feet
C.the friction between sand and feet is more than that between concrete and feet
D.the sand is grainy but concrete is smooth

Answer: Option D

DoThe Best
By DoThe Best February 4, 2016 15:12
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