Give the range of wavelength of visible light.

Consider the following statements regarding the electromagnetic spectrum:
$(A)$ The wavelength of microwaves is greater than that of $UV$ rays.
$(B)$ The wavelength of $IR$ rays is less than that of $UV$ rays.
$(C)$ The wavelength of microwaves is lesser than that of $IR$ rays.
$(D)$ Gamma rays have the shortest wavelength in the electromagnetic spectrum.
Which of the above statements are true?

Which of the following is responsible for the greenhouse effect?

The frequency of a wave is $6 \times 10^{15} \text{ Hz}$. This wave is:

The number of wavelengths in the visible spectrum is:

Which waves are used to destroy cancer cells?