mesons can be
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(a) |
(b) |
(c) |
(d) |
mesons can be
|
(a) |
(b) |
(c) |
(d) |
(d)
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A point charge of 40 stat coulomb is placed 2 cm in front of an earthed metallic plane plate of large size. Then the force of attraction on the point charge is
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(a) 100 dynes |
(b) 160 dynes |
(c) 1600 dynes |
(d) 400 dynes |
A convex lens
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(a) Converges light rays |
(b) Diverges light rays |
|
(c) Form real images always |
(d) Always forms virtual images |
A concave mirror gives an image three times as large as the object placed at a distance of 20 cm from it. For the image to be real, the focal length should be
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(a) 10 cm |
(b) 15 cm |
(c) 20 cm |
(d) 30 cm |
Assertion : In meter bridge experiment, a high resistance is always connected in series with a galvanometer.
Reason : As resistance increases current through the circuit increases.
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(a) If both assertion and reason are true and the reason is the correct explanation of the assertion. |
|
(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. |
