- ANon-magnetic.
- BPara magnetic.
- CDia magnetic.
- DFerro magnetic.
Explanation:
Magnetic susceptibility is a dimensionless proportionality constant that indicates the degree of magnetisation of a material in response to an applied magnetic field.
Substances such as copper, iron have negative susceptibility as these substances are diamagnetic substances.
Substances with negative susceptibility signifies that they are repelled by magnets.
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The current in a simple series circuit is 5.0 amp. When an additional resistance of 2.0 ohms is inserted, the current drops to 4.0 amp. The original resistance of the circuit in ohms was
|
(a) 1.25 |
(b) 8 |
(c) 10 |
(d) 20 |
When a
atom is bombarded with α - particles, one of the product of nuclear transmutation is
. The other is
|
(a) |
(b) |
(c) |
(d) |
If identical charges (-q) are placed at each corner of a cube of side b, then electric potential energy of charge (+q) which is placed at centre of the cube will be
|
(a) |
(b) |
(c) |
(d) |
Two electric lamps of 40 watt each are connected in parallel. The power consumed by the combination will be
|
(a) 20 watt |
(b) 60 watt
|
(c) 80 watt |
(d) 100 watt |
The bending of light as it passes from one medium into another is commonly known as:
Two free parallel wires carrying currents in opposite direction
| (a) Attract each other |
| (b) Repel each other |
| (c) Neither attract nor repel |
| (d) Get rotated to be perpendicular to each other |