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 ?

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

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Physics
X-rays region lies between

Gamma-rays and ultraviolet region
Short radio waves and long radio waves
Visible and infra-red region
Ultraviolet and visible region

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