A uniform electric field and a uniform magnetic field are produced, pointed in the same direction. An electron is projected with its velocity pointing in the same direction
|
(a) The electron will turn to its right |
|
(b) The electron will turn to its left |
|
(c) The electron velocity will increase in magnitude |
|
(d) The electron velocity will decrease in magnitude |
(d) The electron velocity will decrease in magnitude
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Energy of photon whose frequency is 
, will be
|
(a) 4.14 |
(b) 4.14 |
(c) 4.14 |
(d) 4.14 |
Some radioactive nucleus may emit
|
(a) Only one α,β or γ at a time |
|
(b) All the three α,β and γ one after another |
|
(c) All the three α,β and γ simultaneously |
|
(d) Only α and β simultaneously |
In the shown circuit, what is the potential difference across A and B
|
(a) 50 V |
(b) 45 V |
(c) 30 V |
(d) 20 V |
An e.m.f. of 12 volt is produced in a coil when the current in it changes at the rate of 45 amp/minute. The inductance of the coil is
|
(a) 0.25 henry |
(b) 1.5 henry |
(c) 9.6 henry |
(d) 16.0 henry |
The ratio of the energy of a photon with 
to that with 
is
|
(a) 2 |
(b) 1/4 |
(c) 4 |
(d) 1/2 |
