Answer:
Step-by-step explanation:
Prism is a glass object that is used to study the pattern of refraction.
During this experiment it is not advised to used small values of incident angle , as when a small amount of incident ray is passed the refracted pattern observed at the end will not provide satisfactory results.
The amount of light that comes out of prism which is the refracted light will also be small hence study of complete refracted pattern will not be possible.
The small incident angle will give rise to more errors in measurement.