Which of the following statements concerning light is false?

It is a part of the electromagnetic spectrum

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It travels with same velocity, i.e.

3 \times 10^{10} c m / s

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It cannot be deflected by a magnet

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It consists of photons of same energy

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Solution

The correct option is D It consists of photons of same energy
The statement (D) is false. Only monochromatic light consists of photons of same energy. Monochromatic light consists of only one wavelength. Usually light consists of several wavelengths with photons of different energies. Such light is called polychromatic light.

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