The fringe width in Young’s double slit experiment increases when
|
(a) Wavelength increases |
(b) Distance between the slits increases |
|
(c) Distance between the source and screen decreases |
(d) The width of the slits increases |
(a) Wavelength increases
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Due to 10 ampere of current flowing in a circular coil of 10 cm radius, the magnetic field produced at its centre is 3.34 
. The number of turns in the coil will be
|
(a) 5000 |
(b) 100 |
(c) 50 |
(d) 25 |
Suppose a planet goes around Sun with a linear speed twice as fast that of earth. What will be it's orbit size as compared to that of earth ? (Radius of earth = R)
|
(a) R / 4 |
(b) R / 2 |
(c) R |
(d) 2R |
A charge (-q) and another charge (+Q) are kept at two points A and B respectively. Keeping the charge (+Q) fixed at B, the charge (-q) at A is moved to another point C such that ABC forms an equilateral triangle of side l. The net work done in moving the charge (-q) is
|
(a) |
(b) |
(c) |
(d) Zero |
The energy stored in a 50 mH inductor carrying a current of 4 A will be
|
(a) 0.4 J |
(b) 4.0 J |
(c) 0.8 J |
(d) 0.04 J |
The maximum distance upto which TV transmission from a TV tower of height h can be received is proportional to
|
(a) h1/2 |
(b) h |
(c) h3/2 |
(d) h2 |
