GATE Physics Quiz Questions and Answers - 2

Question: 6

For total internal reflection to take place light must travel from _____ the critical angle.

(A) Denser to rarer medium and angle of incidence inside the denser medium must be less than

(B) Rarer to denser medium and angle of incidence inside the denser medium must e equal to

(C) Rarer to denser medium and angle of incidence inside the denser medium must be greater than

(D) Denser to rarer medium and angle of incidence inside the denser medium must be greater than

Question: 7

In Fresnel diffraction, source and screen are

(A) Away from each other

(B) At infinite distance from the obstacle

(C) At finite distance from the obstacle

(D) Very close to each other

Question: 8

Polarisation of light waves proves that the light waves are ______ waves.

(A) Coherent

(B) Stationary

(C) Longitudinal

(D) Transverse

Question: 9

The bending of waves around the edges of an obstacle is called

(A) Reflection

(B) Refraction

(C) Polarisation

(D) Diffraction

Question: 10

The spectra that depends only on the temperature of the source is _____ spectrum.

(A) Line absorption

(B) Band

(C) Line

(D) Continuous