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Physics

Physics
The electric current in a metal wire is due to the flow of -

Ions
Holes
Electrons
Protons

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

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Physics
Velocity of sound in air does not depend on

Humidity of air
Pressure of air
Temperature of air
Density of air

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Physics
When the main switch of the house is put off it disconnects the

Earth wire and the neutral wire
Live wire and the neutral wire
Live wire only
Live wire and the earth wire

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Physics
A man standing on a edge of a cliff throws a stone vertically upwards with a certain speed. He then throws another stone downwards with the same speed. Find the ratio of the speeds of the two stones when they hit the ground.

0.044444444444444
0.042361111111111
0.043055555555556
Cannot be found from the given information.

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Physics
When an unbalanced force acts on an object

The speed & direction of the object will change
Causes the object to move
Causes change in motion of the object
All of these

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MORE MCQ ON Physics

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