- ACopper, hydrogen, silver.
- BCopper, hydrogen, argon.
- CHydrogen, oxygen, argon.
- DCopper, silver, oxygen.
Explanation:
Diamagnetic substances are those which are freebly repelled by the magnetic field.
$\therefore$ Copper, Hydrogen, Silver are diamagnetic as their atoms have net magnetic dipole moment zero.
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Atomic power station at Tarapore has a generating capacity of 200 MW. The energy generated in a day by this station is
|
(a) 200 MW |
(b) 200 J |
(c) 4800 |
(d) 1728 |
In which of the following the final image is erect?
A wire has a resistance of 12 ohm. It is bent in the form of equilateral triangle. The effective resistance between any two corners of the triangle is
|
(a) 9 ohms |
(b) 12 ohms |
(c) 6 ohms |
(d) 8/3 ohms |
A parallel beam of light is incident on a converging lens parallel to its principal axis. As one moves away from the lens on the other side on its principal axis, the intensity of light:
If 4
energy is required to move a charge of 0.25 coulomb between two points. Then what will be the potential difference between them
|
(a) 178 V |
(b) 256 V |
(c) 356 V |
(d) None of these |
Which gates is represented by this figure

|
(a) NAND gate |
(b) AND gate |
(c) NOT gate |
(d) OR gate |
Before using the tangent galvanometer, its coil is set in
|
(a) Magnetic meridian (or vertically north south) |
|
(b) Perpendicular to magnetic meridian |
|
(c) At angle of 45o to magnetic meridian |
|
(d) It does not require any setting |