- A2 MeV
- B1 MeV
- C1 eV
- D10 MeV
Explanation:
The Q value for a reaction is the amount of energy released by that reaction.
In beta decay, a typical Q is around 1 MeV.
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A 100 ohm galvanometer gives full scale deflection at 10 mA. How much shunt is required to read 100 mA
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(a) 11.11 ohm |
(b) 9.9 ohm |
(c) 1.1 ohm |
(d) 4.4 ohm |
Two charge + q and -q are situated at a certain distance. At the point exactly midway between them
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(a) Electric field and potential both are zero |
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(b) Electric field is zero but potential is not zero |
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(c) Electric field is not zero but potential is zero |
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(d) Neither electric field nor potential is zero |
What is the effect on Fresnel’s biprism experiment when the use of white light is made
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(a) Fringe are affected |
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(b) Diffraction pattern is spread more |
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(c) Central fringe is white and all are coloured |
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(d) None of these |
A circular coil ‘A’ has a radius R and the current flowing through it is I. Another circular coil ‘B’ has a radius 2R and if 2I is the current flowing through it, then the magnetic fields at the centre of the circular coil are in the ratio of (i.e. to
)
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(a) 4 : 1 |
(b) 2 : 1 |
(c) 3 : 1 |
(d) 1 : 1 |
According to Faraday's law of electromagnetic induction
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(a) The direction of induced current is such that it opposes the cause producing it |
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(b) The magnitude of induced e.m.f. produced in a coil is directly proportional to the rate of change of magnetic flux |
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(c) The direction of induced e.m.f. is such that it opposes the cause producing it |
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(d) None of the above |