# General Knowledge - Physics

Exercise : Physics - Section 1
• Physics - Section 1
1.
Radiocarbon is produced in the atmosphere as a result of
collision between fast neutrons and nitrogen nuclei present in the atmosphere
action of ultraviolet light from the sun on atmospheric oxygen
action of solar radiations particularly cosmic rays on carbon dioxide present in the atmosphere
lightning discharge in atmosphere
Explanation:
No answer description is available. Let's discuss.

2.
It is easier to roll a stone up a sloping road than to lift it vertical upwards because
work done in rolling is more than in lifting
work done in lifting the stone is equal to rolling it
work done in both is same but the rate of doing work is less in rolling
work done in rolling a stone is less than in lifting it
Explanation:
No answer description is available. Let's discuss.

3.
The absorption of ink by blotting paper involves
viscosity of ink
capillary action phenomenon
diffusion of ink through the blotting
siphon action
Explanation:
No answer description is available. Let's discuss.

4.
Siphon will fail to work if
the densities of the liquid in the two vessels are equal
the level of the liquid in the two vessels are at the same height
both its limbs are of unequal length
the temperature of the liquids in the two vessels are the same