Before using the tangent galvanometer, its coil is set in
|
(a) Magnetic meridian (or vertically north south) |
|
(b) Perpendicular to magnetic meridian |
|
(c) At angle of 45o to magnetic meridian |
|
(d) It does not require any setting |
(a) Magnetic meridian (or vertically north south)
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Which of the following isotopes is used for the treatment of cancer
|
(a) |
(b) |
(c) |
(d) |
Assertion : Magnetic flux can produce induced e.m.f.
Reason : Faraday established induced e.m.f. experimentally.
|
(a) If both assertion and reason are true and the reason is the correct explanation of the assertion. |
|
(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 assertion is false but reason is true. |
Figure shows three points A, B and C in a region of uniform electric field 
. The line AB is perpendicular and BC is parallel to the field lines. Then which of the following holds good. Where 
and 
represent the electric potential at points A, B and C respectively
|
(a) |
(b) |
(c) |
(d) |
Momentum of a photon of wavelength l is
|
(a) |
(b) Zero |
(c) |
(d) |
Energy bands in solids are a consequence of
|
(a) Ohm’s Law |
(b) Pauli’s exclusion principle |
|
(c) Bohr’s theory |
(d) Heisenberg’s uncertainty principle |
Serious draw back of the semiconductor device is
|
(a) They cannot be used with high voltage |
|
(b) They pollute the environment |
|
(c) They are costly |
|
(d) They do not last for long time |
A crystal diode is a
|
(a) Non-linear device |
(b) Amplifying device |
(c) Linear device |
(d) Fluctuating device |
