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Assertion : Separation of isotope is possible because of the difference in electron numbers of isotope.
Reason : Isotope of an element can be separated by using a mass spectrometer.
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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 assertion is false but reason is true. |
The unit of electric field is not equivalent to
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(a) N/C |
(b) J/C |
(c) V/m |
(d) J/C - m |
Find out the e.m.f. produced when the current changes from 0 to 1 A in 10 second, given L = 10 mH
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(a) 1 V |
(b) 1 mV |
(c) 1 mV |
(d) 0.1 V |
A proton accelerated by a potential difference 500 KV moves though a transverse magnetic field of 0.51T as shown in figure. The angle θ through which the proton deviates from the initial direction of its motion is
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(a) 15° |
(b) 30° |
(c) 45° |
(d) 60° |
If a glass prism is dipped in water, its dispersive power:
If R is the Rydberg’s constant for hydrogen the wave number of the first line in the Lyman series will be
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(a) |
(b) |
(c) |
(d) 2R |
The activity of a radioactive sample
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(a) Can be increased by heating it |
(b) Is independent of physical parameter |
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(c) Cannot be increased by any method |
(d) Both (b) and (c) |
