- AWhole of the positive charge is concentrated at the centre of atom.
- BThere are neutrons inside the nucleus.
- CElectrons are embedded in the atom.
- DElectrons are revolving around the nucleus.
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In a diffraction pattern by a wire, on increasing diameter of wire, fringe width
|
(a) Decreases |
|
(b) Increases |
|
(c) Remains unchanged |
|
(d) Increasing or decreasing will depend on wavelength |
The magnetic field in a coil of 100 turns and 40 square cm area is increased from 1 Tesla to 6 Tesla in 2 second. The magnetic field is perpendicular to the coil. The e.m.f. generated in it is
|
(a) |
(b) 1.2 V |
(c) 1.0 V |
(d) |
The resistance of a galvanometer is 50 ohms and the current required to give full scale deflection is 100μA. In order to convert it into an ammeter, reading upto 10A, it is necessary to put a resistance of
|
(a) 5 |
(b) 5 |
|
(c) |
(d) 99,950 |
A parallel beam of monochromatic light is incident at one surface of a equilateral prism. Angle of incidence is 55° and angle of emergence is 46°. The angle of minimum deviation will be
|
(a) Less than 41° |
(b) Equal to 41° |
(c) More than 41° |
(d) None of the above |