List of top Physics Questions on Electromagnetic Spectrum asked in CBSE CLASS XII

What are infrared waves ? Why are these waves referred to as ‘heat waves’ ? Give any two uses of these waves.

Name the electromagnetic waves which are used for (i) detection of fractures in bones
(ii) physiotherapy
(iii) radar systems
Also write their wavelength range.

Electromagnetic waves used in a diagnostic tool in medicine have a wavelength range

Name the electromagnetic waves which are used for (i) detection of fractures in bones
(ii) physiotherapy
(iii) radar systems
Also write their wavelength range.

Electromagnetic waves used in a diagnostic tool in medicine have a wavelength range

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: