- AUltraviolet
- BVisible
- CInfrared
- DPartially Visible
Explanation:
Balmer series lies in the visible spectrum.
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Two different metals are joined end to end. One end is kept at constant temperature and the other end is heated to a very high temperature. The graph depicting the thermo e.m.f. is
|
(a) |
(b) |
(c) |
(d) |
In the context of Doppler effect in light, the term ‘red shift’ signifies
|
(a) Decrease in frequency |
(b) Increase in frequency |
|
(c) Decrease in intensity |
(d) Increase in intensity |
Which of the following relation is correct in magnetism
|
(a) |
(b) I = V + H |
(c) |
(d) |
When a beam of light is used to determine the position of an object, the maximum accuracy is achieved if the light is
|
(a) Polarised |
(b) Of longer wavelength |
|
(c) Of shorter wavelength |
(d) Of high intensity |