The ionization potential for second He electron is
|
(a) 13.6 eV |
(b) 27.2 eV |
(c) 54.4 eV |
(d) 100 eV |
The ionization potential for second He electron is
|
(a) 13.6 eV |
(b) 27.2 eV |
(c) 54.4 eV |
(d) 100 eV |
(c) 54.4 eV
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Assertion : A domestic electrical appliance, working on a three pin will continue working even if the top pin is removed.
Reason : The third pin is used only as a safety device.
|
(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. |
|
(c) If assertion is true but reason is false. |
|
(d) If the assertion and reason both are false. |
The current in the arm CD of the circuit will be

|
(a) |
(b) |
(c) |
(d) |
The distance between the body centred atom and a corner atom in sodium (a = 4.225 Å) is
|
(a) 3.66 Å |
(b) 3.17 Å |
(c) 2.99 Å |
(d) 2.54 Å |
A 50 mH coil carries a current of 2 ampere. The energy stored in joules is
|
(a) 1 |
(b) 0.1 |
(c) 0.05 |
(d) 0.5 |

A parallel plate condenser is filled with two dielectrics as shown. Area of each plate is
and the separation is t metre . The dielectric constants are
and
respectively. Its capacitance in farad will be

|
(a) |
(b) |
(c) |
(d) |
A circular loop carrying a current is replaced by an equivalent magnetic dipole. A point on the axis of the loop is
|
(a) An end-on position |
(b) A broad side-on position |
|
(c) Both (a) and (b) |
(d) Neither (a) nor (b) |
The use of study of hysteresis curve for a given material is to estimate the
|
(a) Voltage loss |
(b) Hysteresis loss |
(c) Current loss |
(d) All of these |