The current flowing in two coaxial coils in the same direction. On increasing the distance between the two, the electric current will
|
(a) Increase |
(b) Decrease |
|
(c) Remain unchanged |
(d) The information is incomplete |
(a) Increase
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How can we explain the reddish appearance of sun at sunrise or sunset?
The chemical equivalent of copper and zinc are 32 and 108 respectively. When copper and silver voltameter are connected in series and electric current is passed through for sometimes, 1.6 g of copper is deposited. Then, the mass of silver deposited will be
|
(a) 3.5 g |
(b) 2.8 g |
(c) 5.4 g |
(d) None of these |
In the figure, three capacitors each of capacitance 6 pF are connected in series. The total capacitance of the combination will be
|
(a) 9 |
(b) 6 |
(c) 3 |
(d) 2 |
What is the coefficient of mutual inductance when the magnetic flux changes by 2 
and change in current is 0.01A
|
(a) 2 henry |
(b) 3 henry |
(c) |
(d) Zero |
| C-1 (waves) | C-II (Production) |
| (1) Infra-red | P. Rapid vibration of electrons in aerials |
| (2) Radio | Q. Electrons in atoms emit light when they move from higher to lower energy level. |
| (3) Light | R. Klystron valve |
| (4) Microwave | S. Vibration of atoms and molecules |
