The current in the given circuit is
|
(a) 0.1 A |
(b) 0.2 A |
(c) 0.3 A |
(d) 0.4 A |
The current in the given circuit is
|
(a) 0.1 A |
(b) 0.2 A |
(c) 0.3 A |
(d) 0.4 A |
(a) 0.1 A
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An electron is moving towards x-axis. An electric field is along y-direction then path of electron is
|
(a) Circular |
(b) Elliptical |
(c) Parabola |
(d) None of these |
"Lux" is a unit of
|
(a) Luminous intensity of a source |
(b) Illuminance on a surface |
|
(c) Transmission coefficient of a surface |
(d) Luminous efficiency of source of light |
An average induced e.m.f. of 1V appears in a coil when the current in it is changed from 10A in one direction to 10 A in opposite direction in 0.5 sec. Self-inductance of the coil is
|
(a) 25 mH |
(b) 50 mH |
(c) 75 mH |
(d) 100 mH |
A conducting sphere of radius R = 20 cm is given a charge Q = 16μC. What is at centre
|
(a) 3.6 |
(b) 1.8 |
(c) Zero |
(d) 0.9 |
Diffraction effects are easier to notice in the case of sound waves than in the case of light waves because
|
(a) Sound waves are longitudinal |
(b) Sound is perceived by the ear |
|
(c) Sound waves are mechanical waves |
(d) Sound waves are of longer wavelength |
Which of the following form(s) a virtual and erect image for all positions of the object
|
(a) Convex lens |
(b) Concave lens |
(c) Convex mirror |
(d) b, c |