The curves (a), (b) (c) and (d) show the variation between the applied potential difference (V) and the photoelectric current (i), at two different intensities of light (I1 > I2). In which figure is the correct variation shown
|
(a)
|
(b)
|
(c)
|
(d)
|
(b)
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The time period of a bar magnet suspended horizontally in the earth's magnetic field and allowed to oscillate
| (a) Is directly proportional to the square root of its mass |
| (b) Is directly proportional to its pole strength |
| (c) Is inversely proportional to its magnetic moment |
| (d) Decreases if the length increases but pole strength remains same |
99% of a radioactive element will decay between
|
(a) 6 and 7 half lives |
(b) 7 and 8 half lives |
|
(c) 8 and 9 half lives |
(d) 9 half lives |
The hottest planet of solar system is
|
(a) Mars |
(b) Mercury |
(c) Venus |
(d) Pluto |
One plate of parallel plate capacitor is smaller than other, then charge on smaller plate will be
|
(a) Less than other |
|
(b) More than other |
|
(c) Equal to other |
|
(d) Will depend upon the medium between them |
There are three voltmeters of the same range but of resistances 1000Ω, 8000 Ω and 4000 Ω respectively. The best voltmeter among these is the one whose resistance is
|
(a) 10000 W |
(b) 8000 W |
(c) 4000 W |
(d) All are equally good |
