Consider the following statements A and B and identify the correct answer.
A. Fresnel's diffraction pattern occurs when the source of light or the screen on which the diffraction pattern is seen or when both are the finite distance from the aperture.
B. Diffracted light can be used to estimate the helical structure of nuclei acids.

Options

A. A and B are true
B. A and B are false
C. A is true but B is false
D. A is false but B is true

Answer

c

Explanation

In Fresnels diffraction pattern, source and screen are of finite distance.
Polarization is used to estimate the helical structure of nucleic acid.