Question

A student while doing the experiment of tracing the path of ray of light through a triangular glass prism is not able to see the image of objects(pins).This may be due to:
(a)angle of incidence is 40`
(b)angle of incidence is 10`
(c)brightness in laboratory
(d)use of white paper on which prism is placed.

Answer 1

its option (b)
I hope...

Answer 2

This has happened probably beacause the incident ray bend at very small angle .

this happens because the incident ray on the glass prism normally cannot refract and deviate more so student is unable to see the image of object pin. in case of small incident angle 10°

so the correct option is - b)

hope helped.