- ✓$\frac{ C _2}{ C _1}$
- B$\frac{C_1}{C_2}$
- C$\sqrt{\frac{C_2}{C_1}}$
- D$\sqrt{\frac{C_1}{C_2}}$
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Assertion : If different gases are filled turn by turn at the same pressure in the discharge tube the discharge in them takes place at the same potential.
Reason : The discharge depends only on the pressure of discharge tube and not on the ionisation potential of gas.
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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. |
Half-life of a substance is 10 years. In what time, it becomes
th part of the initial amount
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(a) 5 years |
(b) 10 years |
(c) 20 years |
(d) None of these |

The mass defect for the nucleus of helium is 0.0303 a.m.u. What is the binding energy per nucleon for helium in MeV
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(a) 28 |
(b) 7 |
(c) 4 |
(d) 1 |
Effective resistance between A and B is
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(a) 15 W |
(b) 5 W |
(c) |
(d) 20 W |
If a 2 kW boiler is used everyday for 1 hour, then electrical energy consumed by boiler in thirty days is
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(a) 15 unit |
(b) 60 unit |
(c) 120 unit |
(d) 240 unit |