Consider the following statements A to B and identify the correct answer
A. Polarised light can be used to study the helical surface of nucleic acids.
B. Optics axis is a direction and not any particular line in the crystal

Consider the following statement A and B and identify the correct choice of the given answers

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.

Consider the following statement 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 at finite distance from the aperture B) Diffraction light can be used to estimate the helical structure of nucleic acids