A current carrying loop is free to turn in a uniform magnetic field. The loop will then come into equilibrium when its plane is inclined at
|
(a) 0° to the direction of the field |
(b) 45 ° to the direction of the field |
|
(c) 90° to the direction of the field |
(d) 135° to the direction of the field |
(c) 90° to the direction of the field
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energy. The emitted particle is
|
(a) Neutron |
(b) Proton |
(c) α - particle |
(d) Neutrino |
Cathode rays and canal rays produced in a certain discharge tube are deflected in the same direction if
|
(a) A magnetic field is applied normally |
(b) An electric field is applied normally |
|
(c) An electric field is applied tangentially |
(d) A magnetic field is applied tangentially |
A plane mirror reflects a pencil of light to form a real image. Then the pencil of light incident on the mirror is
| (a) Parallel | (b) Convergent | (c) Divergent | (d) None of the above |
With respect to air critical angle in a medium for light of red colour [
is q. Other facts remaining same, critical angle for light of yellow colour [
] will be
|
(a) θ |
(b) More than θ |
(c) Less than θ |
(d) |
In the circuit, if the forward voltage drop for the diode is 0.5V, the current will be
|
(a) 3.4 mA |
(b) 2 mA |
(c) 2.5 mA |
(d) 3 mA |
Two capacitors of 10 μF and 20 μF are connected in series with a 30V battery. The charge on the capacitors will be, respectively
|
(a) 100 μC, 200 μC |
(b) 200 μC, 100 μC |
(c) 100 μC, 100 μC |
(d) 200 μC, 200 μC |
