Which of the following statements are correct? A. The angle at minimum deviation of a prism is greater for violet light than that for red light. Choose the correct answer from the options given below: |
A, B, and C Only A, B, C, D Only A, B, C, E Only B, C, D, E Only |
A, B, C, E Only |
The angle at minimum deviation of a prism is greater for violet light than that for red light. $\delta = (\mu - 1)A$ $ \mu = A + \frac{B}{\lambda^2}$ $\Rightarrow \mu_v > \mu_r \Rightarrow \delta_v > \delta_r$
Diffraction occurs only when the size of the obstacle/aperture is comparable to the wavelength of the light used. The emitted rays of light which are parallel to the direction/orientation of original rays are completely unpolarised. The emitted rays of light which are perpendicular to the direction of the original rays are completely polarised. The rays of light which are scattered in all other directions are partially polarised. In the source and images method, a source and its image will act as a set of coherent sources, because the source and its image will have waves in-phase or constant phase difference as shown in the following figure. only D is incorrect. |