Physics - Questions and Answers, General Study (GK)

Home » General Study » Physics - Questions and Answers Objective Questions

Physics - Questions and AnswersPage 25

241.

The water from a hand-pump is warm in winter because

(a)our body is cold in winter and water appears to be warm

(b)the temperature inside the earth is higher than the atmospheric temperature

(c)the pumping process causes friction which warms up the water

(d)inside water comes out and absorbs heat from the environment

Comment

Answer is: BNA

242.

Heat is transmitted from higher to lower temperature through actual mass motion of the molecules in

(a)conduction

(b)radiation

(c)convection

(d)all of these

Comment

Answer is: CNA

243.

At absolute zero temperature, the kinetic energy of the molecules

(a)becomes constant

(b)becomes maximum

(c)becomes minimum

(d)becomes zero

Comment

Answer is: DNA

244.

Woolen clothes keep the body warm because

(a)wool absorbs radiant heat from outer objects

(b)wool increases the temperature of the body

(c)wool is the bad conductor of the heat so it does not allow heat to flow out of the body

(d)wool rejects heat from outer objects

Comment

Answer is: CNA

245.

A glass container cracks when very hot tea is poured into it a probable reason for this is the

(a)low specific heat of gas

(b)low thermal conductivity of glass

(c)high thermal conductivity of glass

(d)None of the above

Comment

Answer is: BNA

246.

Water is usual as coolant in the radiator of a car engine because it

(a)has low boiling point

(b)has low density

(c)is easily available

(d)has high specific heat

Comment

Answer is: DNA

247.

According to Newton's low of cooling, the rate of cooling of a body is proportional to the

(a)temperature of the body

(b)temperature of the surrounding

(c)difference of the temperature of the body and its surrounding

(d)None of the above

Comment

Answer is: CNA

248.

Device used to measure very high temperature is

(a)bolometer

(b)pyrometer

(c)thermometer

(d)calorimeter

Comment

Answer is: BNA

249.

The first law of thermodynamics is concerned with the conservation of

(a)energy

(b)number of molecules

(c)number of moles

(d)temperature

Comment

Answer is: ANA

250.

The boiling point of liquid is

(a)increases with increase in pressure

(b)affected by addition of soluble solid

(c)both (a) and (b)

(d)none of the above

Comment

Answer is: CNA

Comments

No comment yet.

Physics - Questions and AnswersPage 25

Comments

Similar GS Topics

Top 10 List

Miscellaneous

Follow us on YouTube

Links

Social links

For Coaching Class/Schools

Subscribe for updates