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Arrange the following electromagnetic radiations per quantum in the order of increasing energy : A : Blue light B : Yellow light C : X-ray D : Radiowave

1. D, B, A, C
2. A, B, D, C
3. C, A, B, D
4. B, A, D, C

Correct answer: B, A, D, C

Solution

The energy of electromagnetic radiation is directly proportional to its frequency; thus, radiowaves have the lowest energy, followed by yellow light, blue light, and finally X-rays, which have the highest energy.

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