Q.

According to Planck, the smallest quantity of energy that can be emitted or absorbed in the form of electromagnetic radiation is called

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a

photon

b

quantum

c

Both (a) and (b)

d

None of these

answer is B.

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Detailed Solution

According to Planck, the smallest quantity of energy that can be emitted or absorbed m the form of electromagnetic radiation is called quantum. The quantum of light are called photons. Thus, most appropriate answer is (b ).
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According to Planck, the smallest quantity of energy that can be emitted or absorbed in the form of electromagnetic radiation is called