Question

2. Select incorrect statements.
(1) Every object emits radiations whose predominant frequency depends on its temperature.
(2) The quantum energy of a wave is proportional to its frequency.
(3) Photons are quanta of light
(4) The value of the Planck's constant depends on energy.​

Answer 1

Answer:

The incorrect statement is the value of the Planck's constant depends on energy.​i.e.option(4).

Explanation:

(1)Every object emits radiation whose predominant frequency depends on its temperature-Every item emits radiation, the frequency of which is determined by the temperature.

(2)The quantum energy of a wave is proportional to its frequency-The frequency of radiation is related to the energy of a quantum.

                                    $Energy\propto \nu$

ν=frequency

(3)Photons are quanta of light- A photon is a light quantum.

(4)The value of the Planck's constant depends on energy-The Planck constant is a basic constant in physics. Nothing affects it.

Hence, the correct answer among the given options is (4).

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