When the accelerating voltage applied on the electrons increased beyond a critical value
|
(a) Only the intensity of the various wavelengths is increased |
| (b) Only the wavelength of characteristic relation is affected |
| (c) The spectrum of white radiation is unaffected |
|
(d) The intensities of characteristic lines relative to the white spectrum are increased but there is no change in their wavelength |
(d) The intensities of characteristic lines relative to the white spectrum are increased but there is no change in their wavelength
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The network shown in the figure is a part of a complete circuit. If at a certain instant the current i is 5 A and is decreasing at the rate of 
then 
is
|
(a) 5 V |
(b) 10 V |
(c) 15 V |
(d) 20 V |
The equivalent resistance of the following diagram A and B is
|
(a) |
(b) 9 W |
(c) 6 W |
(d) None of these |
In electrolysis, if the duration of the passage of current is doubled, the mass liberated i
|
(a) Doubled |
(b) Halved |
(c) Increased four times |
(d) Remains the same |
The optical density of turpentine is higher than that of water while its mass density is lower. Fig. shows a layer of turpentine floating over water in a container. For which one of the four rays incident on turpentine in Fig, the path shown is correct?
A ray of light travels from a denser to a rarer medium then, the ray:
