- AGauss's law
- BKepler's law
- CCoulomb's law
- DGravitational law
Explanation:
Coulomb's law: The force exerted by one point charge is proportional to the product of the charge and varies inversely as the sure of the distance separating the charges.
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Two parallel beams of electrons moving in the same direction produce a mutual force
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(a) Of attraction in plane of paper |
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(b) Of repulsion in plane of paper |
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(c) Upwards perpendicular to plane of paper |
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(d) Downwards perpendicular to plane of paper |
Metallic solids are always opaque because
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(a) Solids effect the incident light |
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(b) Incident light is readily absorbed by the free electron in a metal |
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(c) Incident light is scattered by solid molecules |
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(d) Energy band traps the incident light |
Three light bulbs of 40 W, 60 W and 100 W are connected in series with 220 V source. Which one of the bulbs will glow brightest
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(a) 40 W |
(b) 60 W |
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(c) 100 W |
(d) All with the same brightness |
Five equal resistances each of value R are connected in a form shown alongside. The equivalent resistance of the network
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(a) Between the points B and D is R |
(b) Between the points B and D is |
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(c) Between the points A and C is R |
(d) b, c |