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hamidoon123

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A line normal to the wave front is called?

ECAT Engineering Exams Quizzes MCQs Quizzes ECAT Engineering Entry Test 2017 Physics Physical Optics 1

Question:
A line normal to the wave front is called

Option A):
A ray of light
Option B):
None of these
Option C):
A beam of light
Option D):
Both

Correct Answer is Option A):
A ray of light