Physics - Study Mode

[#1211] The weakest of all fundamental forces is
Correct Answer

(A) Gravitational force

Explanation

Solution: Gravitation is by far the weakest of the four interactions at the atomic scale, where electromagnetic interactions dominate.

[#1212] The unit of force is a
Correct Answer

(A) Derived Unit

Explanation

Solution: The unit of force is a derived unit.

[#1213] Atmospheric pressure exerted on earth is due to
Correct Answer

(A) Gravitational pull

Explanation

Solution: Atmospheric pressure is caused by the gravitational attraction of the planet on the atmospheric gases above the surface, and is a function of the mass of the planet, the radius of the surface, and the amount and composition of the gases and their vertical distribution in the atmosphere.

[#1214] What is the SI unit of Force?
Correct Answer

(C) Newton

Explanation

Solution: SI unit of force is Newton.

[#1215] What measures Air pressure?
Correct Answer

(D) Barometer

Explanation

Solution: Barometer measures air pressure.