The distance between the plates of a parallel plate condenser is 4mm and potential difference is 60 volts. If the distance between the plates is increased to 12mm, then
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(a) The potential difference of the condenser will become 180 volts |
|
(b) The P.D. will become 20 volts |
|
(c) The P.D. will remain unchanged |
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(d) The charge on condenser will reduce to one third |
(a) The potential difference of the condenser will become 180 volts
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The adjoining figure shows two bulbs B1 and B2 resistor R and an inductor L. When the switch S is turned off
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(a) Both B1 and B2 die out promptly |
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(b) Both B1 and B2 die out with some delay |
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(c) B1 dies out promptly but B2 with some delay |
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(d) B2 dies out promptly but B1 with some delay |
The explosion of the atomic bomb takes place due to
|
(a) Nuclear fission |
(b) Nuclear fusion |
|
(c) Scattering |
(d) Thermionic emission |
The Young's experiment is performed with the lights of blue (λ = 4360 Å) and green colour (λ = 5460 Å), If the distance of the 4th fringe from the centre is x, then
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(a) x (Blue) = x (Green) |
(b) x (Blue) > x (Green) |
(c) x (Blue) < x (Green) |
(d) |
In which of the following remote sensing technique is not used
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(a) Forest density |
(b) Pollution |
(c) Wetland mapping |
(d) Medical treatment |
X-rays cannot be deflected by means of an ordinary grating due to
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(a) Large wavelength |
(b) High speed |
(c) Short wavelength |
(d) None of these |
$\frac{\text{L}}{\text{T}}$
$\frac{\text{T}}{\text{L}}$
$\frac{\text{L}^2}{\text{T}^2}$
$\frac{\text{T}^2}{\text{L}^2}$
