The factors on which the deviation produced by a prism depends on are…

The correct answer is Option (3) → (A), (B), (C), (D), (E) Only

The angle of deviation of a prism is \( \delta = i + e - A \), and for a given prism it depends on all of the following.

(A) Angle of incidence — Yes. \( \delta \) changes with i, being least at the minimum-deviation position.

(B) Angle of Prism — Yes. A larger A deviates the ray more (for a thin prism \( \delta = (\mu - 1)A \)).

(C) Nature of material of Prism — Yes. It fixes the refractive index \( \mu \).

(D) Colour of light and (E) Wavelength of light — Yes. \( \mu \) depends on the wavelength, so each colour is deviated by a different amount.

Note: Items (A), (B) and (C) of this question are from the latest textbook (2026-27). Items (D) and (E), that the deviation depends on the colour and wavelength of light, are printed only in the pre-rationalised textbook (2022-23). They were removed from the latest book, but dispersion of light through a prism is still in the CUET 2026 syllabus, so do not skip it.

NCERT (2026-27):
Refraction Through a Prism – “… Thus, the angle of deviation depends on the angle of incidence.”

Refraction Through a Prism – “… Equation (9.38) thus provides a method of determining refractive index of the material of the prism. For a small angle prism, i.e., a thin prism, D_m is also very small, and we get

    \( \displaystyle D_m = (n_{21} - 1)A \)”

NCERT (Pre-rationalised edition, 2022-23):
Dispersion by a Prism – “… Dispersion takes place because the refractive index of medium for different wavelengths (colours) is different.”