Electric potential is given by 
T, hen electric force acting on 2C point charge placed on origin will be
|
(a) 2N |
(b) 6N |
(c) 8N |
(d) 20 N |
(d) 20 N
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When 
undergoes fission, 0.1% of its original mass is changed into energy. How much energy is released if 1kg of 
undergoes fission
|
(a) 9 |
(b) 9 |
(c) 9 |
(d) 9 |
$\vec{\text{v}},\ \vec{\text{v}}_1$ and $\vec{\text{v}}_2$ must be parallel to each other.
$\vec{\text{v}}_1+\vec{\text{v}}_2$ must be parallel to $\vec{\text{v}}.$
$\text{m}_1\vec{\text{v}}_1+\text{m}_2\vec{\text{v}}_2$ must be parallel to $\vec{\text{v}}.$
A transistor is used in common emitter mode as an amplifier. Then
|
(a) The base-emitter junction is forward biased |
|
(b) The base-emitter junction is reverse biased |
|
(c) The input signal is connected in series with the voltage applied to the base-emitter junction |
|
(d) a, c |
The maximum current that flows through a fuse wire before it blows out varies with its radius as
|
(a) |
(b) r |
(c) |
(d) |
