Question

Good absorber and good reflectors of thermal radiation
(a) dark colored clothes
(b) white colored clothes
(c) Insulators
(d) Metals

A vacuum is created between the double walls of thermos flask to reduce heat lose due to-
(a) Radiation
(b) Conduction
(c) Convection
(d) Insulators

How is heat radiations reflected back to thermos flask?
(a) Walls are made shiny
(b) Walls are made polished
(c) Walls are made silvery
(d) all of the above

The amount of radiant enery absorbed or radiants depends upon
(a) nature and color of he object
(b) only on the color of the object
(c) nature of the object
(d) none of the above

Answer 1

Answer:

good emitter

Explanation:

please mark it brilliantly

Answer 2

Answer:

1)a

2)b

3)d

4)a

Explanation:

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