Question

The given diagram exhibits the relationship between the wavelength of the electromagnetic waves and the energy of photons associated with them. The three points P, Q, and R marked on the diagram may correspond respectively to:

• A. X-rays, microwaves, UV radiation
• B. X-rays, UV radiation, microwaves
• C. UV radiation, microwaves, X-rays
• D. Microwaves, UV radiation, X-rays

Hint:

Remember that shorter wavelengths correspond to higher energy photons. X-rays have the shortest wavelength and highest energy, followed by UV radiation and microwaves.

Answer 1

The Correct Option is B

To determine the correct correspondence of P, Q, and R with electromagnetic waves, we need to understand the relationship between wavelength, energy, and their position on the electromagnetic spectrum. 

• X-rays have short wavelengths and high energy photons.
• UV (Ultraviolet) radiation has medium wavelengths and energy.
• Microwaves have long wavelengths and low energy photons.

In the electromagnetic spectrum, energy and wavelength are inversely proportional: higher energy means shorter wavelength, and vice versa.Given this:

1. P: corresponds to X-rays since they are known for short wavelengths and high energy levels.
2. Q: corresponds to UV radiation which falls in the middle range for both wavelength and energy.
3. R: corresponds to microwaves characterized by long wavelengths and low photon energy.

Therefore, the correct order is: X-rays, UV radiation, microwaves