Assertion : Charge is quantized
Reason : Charge, which is less than 1 C is not possible
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(a) If both assertion and reason are true and the reason is the correct explanation of the assertion. |
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(b) If both assertion and reason are true but reason is not the correct explanation of the assertion. |
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(c) If assertion is true but reason is false. |
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(d) If the assertion and reason both are false. |
(c) If assertion is true but reason is false.
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Two magnets A and B are identical in mass, length and breadth but have different magnetic moments. In a vibration magnetometer, if the time period of B is twice the time period of A. The ratio of the magnetic moments 
of the magnets will be
| (a) 1/2 | (b) 2 | (c) 4 | (d) 1/4 |
In the circuit here, the steady state voltage across capacitor C is a fraction of the battery e.m.f. The fraction is decided by
|
(a) R1 only |
(b) R1 and R2 only |
(c) |
(d) |
In Young's double slit experiment, if the slit widths are in the ratio 1 : 9, then the ratio of the intensity at minima to that at maxima will be
|
(a) 1 |
(b) 1/9 |
(c) 1/4 |
(d) 1/3 |
A flake of glass (refractive index 1.5) is placed over one of the openings of a double slit apparatus. The interference pattern displaces itself through seven successive maxima towards the side where the flake is placed. if wavelength of the diffracted light is λ = 600nm, then the thickness of the flake is
|
(a) 2100 nm |
(b) 4200 nm |
(c) 8400 nm |
(d) None of these |
A man is looking at a small object placed at his near point. Without altering the position of his eye or the object, he puts a simple microscope of magnifying power 5X before his eyes. The angular magnification achieved is:
