- ADC dynamo.
- BAC dynamo.
- CMotor.
- DTransformer.
Explanation:
DC dynamo or AC dynamo use to convert mechnical energy into electrial energy.
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1 Curie is equal to
|
(a) 3 |
(b) 3.7 |
|
(c) 5 |
(d) 3.7 |
In the Young's double slit experiment, the spacing between two slits is 0.1 mm. If the screen is kept at a distance of 1.0 m from the slits and the wavelength of light is 5000 Å, then the fringe width is
|
(a) 1.0 cm |
(b) 1.5 cm |
(c) 0.5 cm |
(d) 2.0 cm |
A circular metal plate of radius R is rotating with a uniform angular velocity ω with its plane perpendicular to a uniform magnetic field B. Then the emf developed between the centre and the rim of the plate is
|
(a) πω |
(b) ω |
(c) πω |
(d) ω |
Which of the following statements indicates that light waves are transverse
|
(a) Light waves can travel in vacuum |
(b) Light waves show interference |
|
(c) Light waves can be polarized |
(d) Light waves can be diffracted |
Demagnetisation of magnets can be done by
| (a) Rough handling | (b) Heating |
| (c) Magnetising in the opposite direction | (d) All the above |
$\lambda_\text{e}=\lambda_\text{p}.$
$\lambda_\text{e}<\lambda_\text{p}.$
$\lambda _\text{e}>\lambda_\text{p}.$
The relation between