Inside a hollow charged spherical conductor, the potential
| (a) Is constant |
| (b) Varies directly as the distance from the centre |
| (c) Varies inversely as the distance from the centre |
|
(d) Varies inversely as the square of the distance from the centre |
(a) Is constant
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Lux is equal to
|
(a) 1 lumen/m2 |
(b) 1 lumen/cm2 |
(c) 1 candela/m2 |
(d) 1 candela/cm2 |
In the circuit shown here, E1 = E2 = E3 = 2 V and R1 = R2 = 4 ohms. The current flowing between points A and B through battery E2 is
|
(a) Zero |
(b) 2 amp from A to B |
|
(c) 2 amp from B to A |
(d) None of the above |
In a sample of radioactive material, what fraction of the initial number of active nuclei will remain undisintegrated after half of a half-life of the sample
|
(a) |
(b) |
(c) |
(d) 2 |
Two capacitors of capacities 
and 
are charged to voltages 
and 
respectively. There will be no exchange of energy in connecting them in parallel, if
|
(a) |
(b) |
(c) |
(d) |
An electron microscope is superior to an optical microscope in
|
(a) Having better resolving power |
(b) Being easy to handle |
|
(c) Low cost |
(d) Quickness of observation |
The 6563 Å line emitted by hydrogen atom in a star is found to be red shifted by 5 Å. The speed with which the star is receding from the earth is
|
(a) 17.29 × 109 m/s |
(b) 4.29 × 107 m/s |
(c) 3.39 × 105 m/s |
(d) 2.29 × 105 m/s |
