The essential distinction between X-rays and γ - rays is that
| (a) γ- rays have smaller wavelength than X-rays |
|
(b) γ - rays emanate from nucleus while X-rays emanate from outer part of the atom |
| (c) γ- rays have greater ionizing power than X-rays |
| (d) γ- rays are more penetrating than X-rays |
(b) γ - rays emanate from nucleus while X-rays emanate from outer part of the atom
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
A convex lens of crown glass (n =1.525) will behave as a divergent lens if immersed in
|
(a) Water (n = 1.33) |
(b) In a medium of n = 1.525 |
|
(c) Carbon disulphide n = 1.66 |
(d) It cannot act as a divergent lens |
A neon sign does not produce
|
(a) Line spectrum |
(b) An emission spectrum |
|
(c) An absorption spectrum |
(d) Photons |
The energy liberated on complete fission of 1 kg of 
is (Assume 200 MeV energy is liberated on fission of 1 nucleus)
|
(a) 8.2 |
(b) 8.2 |
(c) 8.2 |
(d) 8.2 |
In X-ray spectrum wavelength 
of line 
depends on atomic number Z as
|
(a) |
(b) |
(c) |
(d) |
A constant current i is passed through a resistor. Taking the temperature coefficient of resistance into account, indicate which of the plots shown in figure best represents the rate of production of thermal energy in the resistor
|
(a) a |
(b) b |
(c) c |
(d) d |
The potential barrier, in the depletion layer, is due to
|
(a) Ions |
(b) Holes |
(c) Electrons |
(d) Both (b) and (c) |
