

MCQOPTIONS
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1. |
Assertion (A): Small glass beads fixed on traffic signal glow brightly when light falls upon them.Reason (R) : Light is totally reflected when the angle of incidence exceeds a certain critical value and light travelling in a denser medium is reflected from a rarer medium.Codes: |
A. | Both A and R are true and R is the correct explanation of A |
B. | Both A and R are but R is not a correct explanation of A |
C. | A is true but R is false |
D. | A is false but R is true |
Answer» B. Both A and R are but R is not a correct explanation of A | |