Question

for your
() Can we use a laboratory thermometer to measure human body temperature ? Give reason
53. (a) Why is the box of a solar cooker painted black from inside ?
(b) In places of hot climate, it is advised that the outer walls of houses be painted white. Why?
54. What is meant by 'convection' ? Explain with the help of an example. Why is it that convection cannot
take place in solids ?
55. Define radiation. Give any two examples where heat is transferred by radiation. What is the name of
invisible heat rays which transfer heat by radiation ?
Multiple Choice Questions (MCQs)
an iron hall at 40°C is dropped in a mug containing water at 40°C. The heat will :​

Answer 1

Explanation:

() no

a) black traps heat

(b) to not trap heat

54) sorry I Don't know

55) sorry I Don't know

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