Heat

Physics
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The process in which rate of transfer of heat is maximum is :

A
conduction
B
convection
C
radiation
D
in all these, heat is transferred with the same speed
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For an ideal conductor, thermal resistance is :

A
unity
B
infinity
C
zero
D
1000
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The lowest attainable fahrenheit temperature is

A
B
C
D
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Statement-1
Radiation involves transfer of heat by electromagnetic waves.
Statement-2
Electromagnetic waves do not required any material medium for propagation.

A
Statement-1 is true, Statement-2 is true and Statement-2 is the correct explanation for Statement-1.
B
Statement-1 is true, Statement-2 is true but Statement-2 is not the correct explanation for Staement-1.
C
Statement-1 is true, Statement-2 is false.
D
Statement-1 is false, Statement-2 is true.
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Which of the follwing is the smallest rise in temperature?

A
B
C
D
All are of equal value
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If we place our hand below a lighted electric bulb. We feel warmer because of :

A
convection
B
radiation
C
conduction
D
both A and B
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Assertion (A): When hot water is poured in a thick glass tumbler then the tumbler breaks.
Reason (R): Glass is a bad conductor of heat

A
A and R are correct and R is correct

explanation for A
B
A and R are correct and R is not correct

explanation for A
C
A is true and R is false
D
A is wrong and R is true.
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The temperature at which a body does not radiate energy

A
C
B
C
D
C
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