Physics
Assertion (A) : For a ray of light incident at an angle of incidence i = 0°, angle of reflection is r = 0°.
Reason (R) : The angle of incidence i is equal to angle of reflection r.
- both A and R are true and R is the correct explanation of A
- both A and R are true and R is not the correct explanation of A
- assertion is false but reason is true
- assertion is true but reason is false
Reflection of Light
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Answer
both A and R are true and R is the correct explanation of A
Explanation
Assertion (A) is true because if a ray of light hits the mirror perpendicularly (i.e., along the normal), the angle of incidence is 0°, and the ray reflects back along the same path. So, angle of reflection is also 0°.
Reason (R) is true because it's a law of reflection which states that during reflection, angle of incidence is always equal to angle of reflection so the Reason correctly explains the Assertion.
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