- AElectrons.
- BNeutrons.
- CPositive ions.
- DNegative ions.
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The mass of a particle is 400 times than that of an electron and the charge is double. The particle is accelerated by 5 V. Initially the particle remained in rest, then its final kinetic energy will be
|
(a) 5 eV |
(b) 10 eV |
(c) 100 eV |
(d) 2000 eV |
In the given figure, when galvanometer shows no deflection, the current (in ampere) flowing through 5Ω resistance will be
|
(a) 0.5 |
(b) 0.6 |
(c) 0.9 |
(d) 1.5 |
The decay constant of a radioactive element is 1.5
per second. Its mean life in seconds will be
|
(a) 1.5 |
(b) 4.62 |
(c) 6.67 |
(d) 10.35 |
Circular part in the centre of retina is called
|
(a) Blind spot |
(b) Yellow spot |
(c) Red spot |
(d) None of the above |
Two identical batteries, each of e.m.f. 2 volt and internal resistance 1.0 ohm are available to produce heat in an external resistance R = 0.5 ohm by passing a current through it. The maximum Joulean power that can be developed across R using these batteries is
|
(a) 1.28 watt |
(b) 2.0 watt |
(c) |
(d) 3.2 watt |