The figure shows initial positions of a source of light S and a light detector D. Both S & D move with
velocity 10 cm/s, as shown. The converging lens of focal length 20 cm is fixed. Time instant(s) when
the detector detects maximum intensity of light is/are :-
Af=20
10cm/s
10cm/s
90cm
(A) 3 sec
(C) 6 sec
(B) 4.5 sec
(D) equal intensity at all time
20 Cibao chefenlef daati
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1
Answers
Answered by
0
Answer:
A
Explanation:
`0.56s` and `4.45s`
`3.8s`
`8.94s` and `19.62s`
`0.56s`
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