Target Exam

CUET

Subject

Physics

Chapter

Wave Optics

Question:

Huygen's concept of secondary wave

Options:

allows us to find the focal length of a thick lens

is a geometrical method to find a wavefront

is used to determine the velocity of light

is used to explain polarisation

Correct Answer:

is a geometrical method to find a wavefront

Explanation:

Huygens principle of secondary wavelets states that every point on a given wavefront is a secondary wavelet.