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Four light bulbs are concealed from an o...

Four light bulbs are concealed from an observer by an opaque wall as shown. Without shifting the positions of the observer and the bulbs, how many bulbs can the observer see from the mirror?

A

1

B

2

C

3

D

4

Text Solution

Verified by Experts

The correct Answer is:
C
Only bulbs `B_(1), B_(2) and B_(4)` will reflect light to the observer.s eye. Hence only three bulbs are visible to the observer.
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