A nucleus
emits one α and one β particles. The resulting nucleus is
|
(a) |
(b) |
(c) |
(d) |
A nucleus
emits one α and one β particles. The resulting nucleus is
|
(a) |
(b) |
(c) |
(d) |
(d)
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The symbol given in figure represents
|
(a) NPN transistor |
(b) PNP transistor |
|
(c) Forward biased PN junction diode |
(d) Reverse biased NP junction diode |
In a Ag voltameter 2.68 gm of silver is deposited in 10 min. The heat developed in 20Ω resistor during the same period will be

|
(a) 192 kJ |
(b) 192 J |
(c) 200 J |
(d) 132 kJ |
An electron moving with a speed u along the positive x-axis at y = 0 enters a region of uniform magnetic field
which exists to the right of y-axis. The electron exits from the region after some time with the speed v at co-ordinate y, then

|
(a) v > u, y < 0 |
(b) v = u, y > 0 |
(c) v > u, y > 0 |
(d) v = u, y < 0 |

A solenoid of length l metre has self-inductance L henry. If number of turns are doubled, its self inductance
|
(a) Remains same |
(b) Becomes 2L henry |
|
(c) Becomes 4L henry |
(d) Becomes |
An object of size 7.5 cm is placed in front of a convex mirror of radius of curvature 25 cm at a distance of 40 cm The size of the image should be
|
(a) 2.3 cm |
(b) 1.78 cm |
(c) 1 cm |
(d) 0.8 cm |