- AC.
- BC/m.
- CCm.
- DNone.
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Assertion : The mass of b-particles when they are emitted is higher than the mass of electrons obtained by other means.
Reason : b-particle and electron, both are similar particles.
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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 the assertion and reason both are false. |
The energy of a photon of wavelength
is given by
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(a) h |
(b) ch |
(c) |
(d) |
In a PN-junction
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(a) P and N both are at same potential |
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(b) High potential at N side and low potential at P side |
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(c) High potential at P side and low potential at N side |
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(d) Low potential at N side and zero potential at P side |
If the electric flux entering and leaving an enclosed surface respectively is
and
the electric charge inside the surface will be
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(a) ( |
(b) ( |
(c) ( |
(d) ( |
A stream of electrons is projected horizontally to the right. A straight conductor carrying a current is supported parallel to electron stream and above it. If the current in the conductor is from left to right then what will be the effect on electron stream
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(a) The electron stream will be pulled upward |
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(b) The electron stream will be pulled downward |
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(c) The electron stream will be retarted |
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(d) The electron beam will be speeded up towards the right |