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Physics

Physics
Period of oscillation of 3 cm microwaves in seconds is

1 × 1010
0.01
0.001
1 × 10–10

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Physics
The S.I. unit of electric charge is :

Ampere
Coulomb
Kelvin
E.s.u

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Physics
The SI unit of luminous emittance is :

Lumen second
Candela
Lux
Lumen

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Physics
The force of friction between two surfaces will increase if:

A layer of lubricant is kept between the two surfaces
Air gap is created between the two surfaces
Irregularities on both the surfaces are removed
The two surfaces are pressed harder

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Physics
Which, of the following radiations has the least wavelength ?

B-rays
X-rays
A-rays
G-rays

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Physics
What should a person on a freely rotating turn table do to decrease his (angular) speed ?

Spread his hands outwards
Raise his hands up
Sit down with raised hands
Bring his hands together

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