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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