An e.m.f. of 5 volt is produced by a self inductance, when the current changes at a steady rate from 3 A to 2 A in 1 millisecond. The value of self inductance is
|
(a) Zero |
(b) 5 H |
(c) 5000 H |
(d) 5 mH |
(d) 5 mH
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In Young’s double slit experiment, distance between two sources is 0.1 mm. The distance of screen from the sources is 20 cm. Wavelength of light used is 5460 Å. Then angular position of the first dark fringe is
|
(a) 0.08° |
(b) 0.16° |
(c) 0.20° |
(d) 0.313° |
A 25 watt, 220 volt bulb and a 100 watt, 220 volt bulb are connected in parallel across a 220 volt line. Which bulb will glow more brightly
|
(a) 25 watt bulb |
(b) 100 watt bulb |
|
(c) Both will have same brightness |
(d) First 25 watt then 100 watt |
