- AAlpha particles can be scattered by Gold nucleus
- BX-ray can be diffracted by crystals
- CUV radiation can cause Photoelectric effect
- DElectrons cannot be diffracted by crystals
Explanation:
Fast moving electrons are associated with wave and hence they show diffraction.
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In the circuit shown in figure, each capacitor has a capacity of 3μF. The equivalent capacity between A and B is
|
(a) |
(b) 3 |
(c) 6 |
(d) 5 |
Two magnets A and B are identical and these are arranged as shown in the figure. Their length is negligible in comparison to the separation between them. A magnetic needle is placed between the magnets at point P which gets deflected through an angle θ under the influence of magnets. The ratio of distance
and
will be

|
(a) |
(b) |
(c) |
(d) |
$\text{F = Mg}$
$\text{F}=\mu\text{Mg}$
$\text{Mg}\leq\text{F}\leq\text{Mg}\sqrt{1+\mu^2}$
$\text{Mg}\geq\text{F}\geq\text{Mg}\sqrt{1-\mu^2}.$
The rays parallel and close to the principal axis are called:
Which one is not the correct statement
|
(a) 1 volt × 1 coulomb = 1 joule |
(b) 1 volt × 1 ampere = 1 joule/second |
|
(c) 1 volt × 1 watt = 1 H.P. |
(d) Watt-hour can be expressed in eV |
A small bar magnet of moment M is placed in a uniform field H. If magnet makes an angle of 30° with field, the torque acting on the magnet is
| (a) MH |
(b) |
(c) |
(d) |