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Physics

Physics
Minimum number of unequal vectors which can give zero resultant are

four
more than four
two
three

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Physics
A stone is dropped from the roof of a house towards the ground. The kinetic energy of the stone will be maximum:

Just after it is dropped
When it is just on the half-way
Just before it touches the ground
When it touches the ground

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Physics
In ________ motion of a body its velocity varies with time.

Equilibrium
Uniform
Non-uniform
Linear

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Physics
For which one of the following does the centre of mass lie outside the body?

A ring
A cricket ball
A book
A fountain pen

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Physics
If a carrier wave of 1000 kHz is used to carry the signal, the length of transmitting antenna will be equal to ________.

0.3 m
300 m
3 m
30 m

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Physics
What are the particles emitted by radioactive element after 3 consecutive disintegration?

2 beta 1 alpha
2 alpha 1 beta
1 alpha 1 beta
2 beta 2 alpha

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