The phenomenon of interference is shown by
|
(a) Longitudinal mechanical waves only |
(b) Transverse mechanical waves only |
|
(c) Electromagnetic waves only |
(d) All the above types of waves |
(d) All the above types of waves
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A current of 1 mA is flowing through a copper wire. How many electrons will pass a given point in one second [e = 1.6 × 10–19 Coulomb]
|
(a) 6.25 × |
(b) 6.25 × |
(c) 6.25 × |
(d) 6.25 × |
Which of the following is true
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(a) Diamagnetism is temperature dependent |
|
(b) Paramagnetism is temperature dependent |
|
(c) Paramagnetism is temperature independent |
|
(d) None of these |
$\text{zero}$
$\frac{1}{8}\omega\text{Bl}^2$
$\frac{1}{2}\omega\text{Bl}^2$
$\text{B}\omega\text{l}^2$
A metallic shell has a point charge ‘q’ kept inside its cavity. Which one of the following diagrams correctly represents the electric lines of forces
|
(a)
|
(b)
|
(c)
|
(d)
|
In general, metallic ropes are suspended on the carriers which take inflammable material. The reason is
|
(a) There speed is controlled |
|
(b) To keep the centre of gravity of the carrier nearer to the earth |
|
(c) To keep the body of the carrier in contact with the earth |
|
(d) Nothing should be placed under the carrier |
