EASY
11th West Bengal Board
IMPORTANT
Earn 100

What are good and bad conductors of heat? Give a few examples. Cite some applications of good and bad conductors of heat.

Important Questions on Heat Transfer

MEDIUM
11th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART I : CLASS 11>Chapter 18 - Heat Transfer>EXERCISE>Q 3
What do you understand by variable and steady state in the case of heat conduction?
MEDIUM
11th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART I : CLASS 11>Chapter 18 - Heat Transfer>EXERCISE>Q 4
Define the co-efficient of thermal conductivity. State the difference between conduction and convection of heat.
MEDIUM
11th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART I : CLASS 11>Chapter 18 - Heat Transfer>EXERCISE>Q 5

Describe an experiment to compare the thermal conductivities of different metals. 

MEDIUM
11th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART I : CLASS 11>Chapter 18 - Heat Transfer>EXERCISE>Q 6
Write notes on the properties and nature of thermal radiation. What is the difference between radiant heat and light?
EASY
11th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART I : CLASS 11>Chapter 18 - Heat Transfer>EXERCISE>Q 7
Explain about a black body.
MEDIUM
11th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART I : CLASS 11>Chapter 18 - Heat Transfer>EXERCISE>Q 8
State and explain Stefan-Boltzmann Law. Using the law deduce Newton's law of cooling which states that if the temperature difference between a hot body and its surroundings be small, the rate of cooling of the body is proportional to the excess temperature of the body over the surroundings.
MEDIUM
11th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART I : CLASS 11>Chapter 18 - Heat Transfer>EXERCISE>Q 9
Two metallic plates of equal cross-sectional area and thickness d1 and d2 and thermal conductivities k1 and k2 are placed in contact. Prove that their equivalent thermal conductivity is given by k=d1+d2d1k1+d2k2