Physics MCQs for Class 9 with Answers
A black dull surface is a good ________ of heat:
Emitter
Absorber
Reflector
Both A and B
In gases, heat is mainly transferred by
Molecular collision
Conduction
Convection
Radiation
Shining silvered surface is a best:
Emitter
Absorber
Reflector
None of these
Heat can be transmitted form one object to the other by
convection
radiation
conduction
all of these
A Leslie cube is use to identify :
Radiation
Conduction
Convection
Both A and B
Dull black surface is a best:
Emitter
Absorber
Reflector
None of these
A Leslie cube has faces:
1
2
3
4
The insulator of heat is:
Cork
Cotton
Wood
All
Coloured surface is a
Best emitter
Good emitter
Bad emitter
Wrost emitter
Which is expert thermal climber:
Crow
Sparrow
Hawks
None
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