- AHave high frequencies
- BHave short wavelength
- CAre transverse
- DCan be reflected
Explanation:
Polarisation of light waves is possible only because they can oscillate in more than one orientation i.e., they are transverse in nature. It has no dependence on its wavelength and frequencies.
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The mass defect per nucleon is called
|
(a) Binding energy |
(b) Packing fraction |
(c) Ionisation energy |
(d) Excitation energy |
prism can produce a minimum deviation $\delta$ in a light beam. If three such prisms are combined, the minimum deviation that can be produced in this beam is:
The potential at a distance R/2 from the centre of a conducting sphere of radius R will be
|
(a) 0 |
(b) |
(c) |
(d) |
The most commonly used material for making transistor is
|
(a) Copper |
(b) Silicon |
(c) Ebonite |
(d) Silver |
A coin kept in a container and not visible can be viewed by pouring water into the container. It happens because of the:
There is no atmosphere on moon because
|
(a) There is no vegetation |
|
(b) The escape velocity at its surface is very low |
|
(c) Diffusion constant of gases is high |
|
(d) There is vacuum in space |
To draw maximum current from a combination of cells, how should the cells be grouped
|
(a) Series |
|
(b)Parallel |
|
(c) Mixed |
|
(d) Depends upon the relative values of external and internal resistance |