Potential gradient is defined as
|
(a) Fall of potential per unit length of the wire |
|
(b) Fall of potential per unit area of the wire |
|
(b) Fall of potential per unit area of the wire |
|
(d) Potential at any one end of the wire |
(a) Fall of potential per unit length of the wire
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The resultant capacitance of given circuit is
|
(a) 3C |
(b) 2C |
(c) C |
(d) |
Light of wavelength 
strikes a photo-sensitive surface and electrons are ejected with kinetic energy E. If the kinetic energy is to be increased to 2E, the wavelength must be changed to 
where
|
(a) |
(b) |
(c) |
(d) |
Nuclear fission was discovered by
|
(a) Auto Hahn and F. strassmann |
(b) Fermi |
|
(c) Bethe |
(d) Rutherford |
The potential difference across the 100 W resistance in the following circuit is measured by a voltmeter of 900 W resistance. The percentage error made in reading the potential difference is
|
(a) |
(b) 0.1 |
(c) 1.0 |
(d) 10.0 |
The resistivity of a wire depends on its
|
(a) Length |
(b) Area of cross-section |
(c) Shape |
(d) Material |
The electromagnetic waves of frequency 2 MHz to 30 MHz are
|
(a) In ground wave propagation |
(b) In sky wave propagation |
|
(c) In microwave propagation |
(d) In satellite communication |
A conducting square loop of side L and resistance R moves in its plane with a uniform velocity v perpendicular to one of its sides. A magnetic induction B constant in time and space, pointing perpendicular and into the plane of the loop exists everywhere. The current induced in the loop is
|
(a) |
(b) |
(c) |
(d) Zero |
