TRB Physics Question Bank - 1

Question: 1

Pyrometer is used to measure

(A) Air pressure

(B) High temperature

(C) Intensity of earthquake

(D) Humidity

Ans: B

High temperature

Question: 2

For the isothermal process ideal gas equation is expressed as

(A) PV = RTy

(B) PV = RT

(C) PVy = RT

(D) p/V = RT

Ans: B

PV = RT

Question: 3

The relation between time of ascent &time of descent in the case of bodies moving under gravity is

(A) Time of ascent is more than the time of descent

(B) Time of ascent is less than the time of descent

(C) Time of ascent is equal to the time of descent

(D) Time of ascent and time of descent will never be equal

Ans: C

Time of ascent is equal to the time of descent

Question: 4

Nichrome wire is used as the heating element because it has

(A) Low specific resistance

(B) Low melting point

(C) High conductivity

(D) High specific resistance

Ans: D

High specific resistance

Question: 5

The percentage of salt water present in sea water is

(A) 2.8%

(B) 3%

(C) 3.5%

(D) 3.9%

Ans: C

3.5%

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