Physics MCQs

Page No. 4

Normal human body temperature 98.6°F corresponds to______________?


a37°C


b42°C


c 55°C


d410°C


View Answer 37°C

Numerical value of Boltzmanns constant is______________?


a1.38×10-31JK-1


b 3.18×10-31JK-1


c3.18×10-23JK-1


d1.38×10-23JK-1


View Answer 1.38×10-23JK-1

We prefer mercury as a thermometric substance because______________?


aOver a wide range of temperature its expansion is uniform


bIt does not stick to thermometer glass


cIt opaque to light


dAll of above


View Answer All of above

In a clinical thermometer the mercury in the capillary tube does not contract once removed from the patient because_______________?


a Mercury takes a long time to contract


bThe amount of mercury use is very small


cThe capillary tube has a small constriction near the bulb


dThe capillary tube is very narrow



Which one is not an example of adiabatic process ?


a rapid escape of air from a burst tyre


brapid expansion of air


cconversion of water into ice in refrigerator


dcloud formation in the atmosphere



If the volume of a gas is held constant and we increase its temperature then_______________?


aits pressure is constant


bits pressure rises


cits pressure falls


dany of above


View Answer its pressure rises

Boyles law helds for ideal gases in________________?


aisochoric processes


b isobaric processes


cisothermal processes


dadiabatic processes


View Answer isothermal processes

Gas molecules of different masses in the same container have the same average transnational kinetic energy which is directly proportional to their_____________?


a volume


bpressure


cabsolute temperature


dtime


View Answer absolute temperature

If the pressure of a given gas is held constant its density is inversely proportional to its absolute temperature. We can refer it as another statement of______________?


aBoyles law


bCharles law


cIdeal gas law


dAvagadros law


View Answer Charles law

The pressure exerted by a column of mercury 76cm high and at 0°C is called_______________?


a1 atmosphere


b1 Newton per square meter


c1 Pascal


ddata is insufficient


View Answer 1 atmosphere

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