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Physics

Physics
In the absence of ozone layer, which rays will enter into atmosphere?

X-rays
Ultraviolet
Visible
Infrared

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Physics
Sound is heard over longer distances on rainy days because

Moist air absorbs sound
Sound travels slowly in moist air
Moist air does not absorb sound
Sound travels faster in moist air

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Physics
It is difficult to fix a nail on a freely suspended wooden frame. Which law supports this statement?

Newton's second law
Pascal's law
Law of inertia
Newton's third law

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Physics
Wollen clothes keep the body warm because

Wool rejects heat from the outer objects
Wool is a bad conductor
Wool absorbs radiant heat from outer objects
Wool increases the temperature of the body

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Physics
A bomb at rest explodes into a large number of tiny fragments. The total momentum of all the fragments

Depends on the total mass of all the fragments
Depends on the speeds of various fragments
Is zero
Is infinity

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Physics
The following particles move with same kinetic energy. Which of them has maximum momentum ?

Proton
Deutron
Alpha Particle
Electron

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