Question

At minimum deviation
position while determination
of refractive index of prism
we observe​

Answer 1

Answer:

Explanation:

When the prism is kept in the minimum deviation position, the width of the spectral line is minimum, which is equal to the slit width. But when the prism is moved away from the minimum deviation position, the line width increases. Now the refractive index can be determined anywhere along the width of the line.

Answer 2

Answer:

when the prism is kept in the minimum which is equal to the slit width.but when the prism is moved away from the minimum deviation position,the line width increases .now the refractive index can be determined anywhere along the width of the line.