In a copper voltameter experiment, current is decreased to one-fourth of the initial value but it is passed for four times the earlier duration. Amount of copper deposited will be
|
(a) Same |
(b) One-fourth the previous value |
|
(c) Four times the previous value |
(d) |
(a) Same
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The length of the wire is doubled. Its conductance will be
|
(a) Unchanged |
(b) Halved |
|
(c) Quadrupled |
(d) 1/4 of the original value |
The impurity atoms which are mixed with pure silicon to make a P-type semiconductor are those of
|
(a) Phosphorus |
(b) Boron |
(c) Antimony |
(d) Copper |
For non-conductors, the energy gap is
|
(a) 6 eV |
(b) 1.1 eV |
(c) 0.8 eV |
(d) 0.3 eV |
Stopping potential for photoelectrons
|
(a) Does not depend on the frequency of the incident light |
|
(b) Does not depend upon the nature of the cathode material |
|
(c) Depends on both the frequency of the incident light and nature of the cathode material |
|
(d) Depends upon the intensity of the incident light |
Outside a nucleus
|
(a) Neutron is stable |
|
(b) Proton and neutron both are stable |
|
(c) Neutron is unstable |
|
(d) Neither neutron nor proton is stable |
