In an interference experiment, the spacing between successive maxima or minima is (Where the symbols have their usual meanings)
|
(a) |
(b) |
(c) |
(d) |
(b) 
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In the Wheatstone's bridge shown, P = 2 Ω, Q = 3Ω, R = 6Ω and S = 8Ω. In order to obtain balance, shunt resistance across 'S' must be
|
(a) 2 Ω |
(b) 3 Ω |
(c) 6 Ω |
(d) 8 Ω |
