- A[L T A].
- B[L-1 T A].
- C[L-2 T A].
- D[L-3 T A].
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Magnetic dipole moment of a rectangular loop is
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(a) Inversely proportional to current in loop |
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(b) Inversely proportional to area of loop |
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(c) Parallel to plane of loop and proportional to area of loop |
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(d) Perpendicular to plane of loop and proportional to area of loop |

A proton and an a-particle are accelerated through a potential difference of 100 V. The ratio of the wavelength associated with the proton to that associated with an a-particle is
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(a) |
(b) 2 : 1 |
(c) 2 |
(d) |
The combined capacity of the parallel combination of two capacitors is four times their combined capacity when connected in series. This means that
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(a) Their capacities are equal |
(b) Their capacities are 1 μF and 2 μF |
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(c) Their capacities are 0.5 μF and 1 μF |
(d) Their capacities are infinite |
A convex lens
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(a) Converges light rays |
(b) Diverges light rays |
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(c) Form real images always |
(d) Always forms virtual images |
Broadcasting antennas are generally
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(a) Omnidirectional type |
(b) Vertical type |
(c) Horizontal type |
(d) None of these |
What physical quantities may X and Y represent ? (Y represents the first mentioned quantity)
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(a) Pressure v/s temperature of a given gas (constant volume) |
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(b) Kinetic energy v/s velocity of a particle |
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(c) Capacitance v/s charge to give a constant potential |
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(d) Potential v/s capacitance to give a constant charge |