RRB Technician (Grade I Signal + Grade III) 2026 · Question 38 of 265

When white light is incident obliquely on a glass prism, which of the following statement(s) is/are NOT true? (i) Red colour undergoes minimum deviation. (ii) The speed of violet colour is the least while travelling through the prism. (iii) Refractive index of green colour is more than the violet colour. (iv) Refractive index of red colour is more than blue colour.

1. ABoth (i) and (ii)
2. BBoth (i) and (iv)
3. CBoth (ii) and (iii)
4. DBoth (iii) and (iv)Correct