- AElectric force
- BMagnetic force
- CNuclear force
- DGravitational force
Explanation:
The force is strongest at the poles of a magnet. Like poles exert a pushing force and repel each other. Unlike poles exert a pulling force and attract each other. magnet A material that attracts steel, iron, cobalt, and nickel.
The force which a magnet exerts on iron and steel is called the magnetic field.
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The frequencies of X-rays, g-rays and ultraviolet rays are respectively a, b and c. Then
|
(a) a < b, b > c |
(b) a > b, b > c |
(c) a > b, b < c |
(d) a < b, b < c |
In the circuit shown below, the power developed in the 6W resistor is 6 watt. The power in watts developed in the 4W resistor is

|
(a) 16 |
(b) 9 |
(c) 6 |
(d) 4 |
If a 2 kW boiler is used everyday for 1 hour, then electrical energy consumed by boiler in thirty days is
|
(a) 15 unit |
(b) 60 unit |
(c) 120 unit |
(d) 240 unit |
The binding energy of nucleus is a measure of its
| (a) Charge | (b) Mass | (c) Momentum | (d) Stability |
The lowest resistance which can be obtained by connecting 10 resistors each of 1/10 ohm is
|
(a) 1/250 Ω |
(b) 1/200 Ω |
(c) 1/100 Ω |
(d) 1/10 Ω |