Correct Answer is : A ray of light is normal to the wavefront.

According to Huygens' principle a ray of light has no significance.

A ray of light is inclined at 45^{\circ} with the wavefront.

A ray of light is tangential to the wavefront.

A ray of light is normal to the wavefront.

Auxiliary Nurse Midwife Exam 2020 Solved Paper

Question : 29 of 130

Marks: +1, -0

Go to Question:

Prev Question

Next Question