Question
Which rays are not the portion of electromagnetic spectrum
|
(a) X-rays |
(b) Microwaves |
(c) a-rays |
(d) Radio waves |
✓
Answer
(c) a-rays
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
In Young’s double slit experiment, the central bright fringe can be identified
|
(a) By using white light instead of monochromatic light |
|
(b) As it is narrower than other bright fringes |
|
(c) As it is wider than other bright fringes |
|
(d) As it has a greater intensity than the other bright fringes |
A ray of light propagates from glass (refractive index = 3/2) to water (refractive index = 4/3). The value of the critical angle
|
(a) sin–1(1/2) |
(b) |
(c) |
(d) |
Electrical conductivity of a semiconductor
|
(a) Decreases with the rise in its temperature |
|
(b) Increases with the rise in its temperature |
|
(c) Does not change with the rise in its temperature |
|
(d) First increases and then decreases with the rise in its temperature |
What is the electric potential at the perpendicular bisector of an electric dipole?
When the length of a microscope tube increases, its magnifying power:
What is used as a moderator in a nuclear reactor
| (a) Water | (b) Graphite |
(c) Cadmium |
(d) Steel |
Who discovered the magnetic effect of electric current?
ike magnetic force ______ each other.
How can the rate of emission of electrons in a cathode ray tube can be increased?
Two coils of self inductance 
and 
are placed closer to each other so that total flux in one coil is completely linked with other. If M is mutual inductance between them, then
|
(a) |
(b) |
(c) |
(d) |
