Physics
If there is a circular hole in a metal plate, what happens to the radius of the hole when the plate is heated?

Increases
Unchanged
Decreases
Depends upon the metal

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Physics
A man standing at the top of a tower has two spheres A and B. He drops sphere A downwards and throws sphere B horizontally at the same time. Which of the following is correct ?

A will reach the ground first.
The question is incomplete because the masses of the spheres are not given.
B will reach the ground first.
Both the spheres will reach the ground simultaneously.

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