When two magnetic moments are compared using equal distance method the deflections produced are 45o and 30o. If the length of magnets are in the ratio 1 : 2, the ratio of their pole strengths is
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(a) 3 : 1 |
(b) 3 : 2 |
(c) |
(d) 2 |
(d) 2
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On heating a liquid, the refractive index generally
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(a) Decreases |
|
(b) Increases or decreases depending on the rate of heating |
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(c) Does not change |
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(d) Increases |
Out of the following statements which is not correct
|
(a) When unpolarised light passes through a Nicol's prism, the emergent light is elliptically polarised |
|
(b) Nicol's prism works on the principle of double refraction and total internal reflection |
|
(c) Nicol's prism can be used to produce and analyse polarised light |
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(d) Calcite and Quartz are both doubly refracting crystals |
The optical density of turpentine is higher than that of water while its mass density is lower. Fig. shows a layer of turpentine floating over water in a container. For which one of the four rays incident on turpentine in Fig, the path shown is correct?
The mass and energy equivalent to 1 a.m.u. respectively
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(a) 1.67 |
(b) 1.67 |
|
(c) 1.67 |
(d) 1.67 |
