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Hot and Cold

Which of thes...

Question

Which of these are better absorbers of radiant heat–dark-coloured or light-coloured objects?

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Solution

Dark-coloured objects absorb and radiate more heat than light-coloured objects.

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Q. Which of these are better radiators of radiant heat–dark-coloured or light-coloured objects?

Q. How does the dark or light colour of an object affect the amount of heat it radiates or absorbs?

(a) Dark colour objects absorb and radiate more heat than light coloured objects.
(b) Dark colour objects absorb more but radiate less heat than light coloured objects.
(c) Dark colour objects absorb less and radiate more heat than light coloured objects.
(d) Dark colour objects absorb and radiate the same amount of heat as light coloured objects.

Q. Clothes of ............... colours absorb heat better than clothes of light colours.

Q. Assertion :All bodies emit radiant energy whether they are solid,liquid or gases. Reason: Black bodies absorb and emit radiant energy better than bodies of lighter colours.

Question 3 (f)
Fill in the blanks :
(f ) Clothes of ___ colours absorb heat better than clothes of light colours.

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