Physics - Study Mode

[#1011] Gear finishing operation is called
Correct Answer

(A) Burnishing

Explanation

Solution: Gear finishing operation is called burnishing.

[#1012] Water will not be vapourised if
Correct Answer

(C) The humidity is 100%

Explanation

Solution: If the relative humidity is 100 percent, water will not evaporate as the air is already saturated with moisture. When relative humidity approaches 100 percent, condensation can occur. The lower the relative humidity, the easier it is for moisture to evaporate.

[#1013] Relative humidity is expressed as
Correct Answer

(C) Percentage

Explanation

Solution: Relative humidity is expressed as percentage.

[#1014] According to special theory of relativity the mass of a particle
Correct Answer

(A) Increases with increase in velocity with respect to an observer.

Explanation

Solution: According to special theory of relativity the mass of a particle increases with increase in velocity with respect to an observer.

[#1015] Bolometer is used to measure
Correct Answer

(B) Temperature

Explanation

Solution: A bolometer is a device for measuring the power of incident electromagnetic radiation via the heating of a material with a temperature-dependent electrical resistance. It was invented in 1878 by the American astronomer Samuel Pierpont Langley. A bolometer consists of an absorptive element, such as a thin layer of metal, connected to a thermal reservoir (a body of constant temperature) through a thermal link. The result is that any radiation impinging on the absorptive element raises its temperature above that of the reservoir — the greater the absorbed power, the higher the temperature.