A vertical wire carrying a current in the upward direction is placed in horizontal magnetic field directed towards north. The wire will experience a force directed towards
|
(a) North |
(b) South |
(c) East |
(d) West |
(d) West
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This symbol represents
|
(a) NOT gate |
(b) OR gate |
(c) AND gate |
(d) NOR gate |
$\frac{1}{8}$
$\frac{1}{4}$
$4$
$8$
A cathode emits 1.8 
electrons per second, when heated. When 400V is applied to anode all the emitted electrons reach the anode. The charge on electron is 1.6 
. The maximum anode current is
|
(a) 2.7 μA |
(b) 29 μA |
(c) 72 μA |
(d) 29 μA |
The ratio of minimum to maximum wavelength in Balmer series is
|
(a) 5 : 9 |
(b) 5 : 36 |
(c) 1 : 4 |
(d) 3 : 4 |
$\overrightarrow{\text{F}}.\overrightarrow{\text{a}}$
$\overrightarrow{\text{v}}.\overrightarrow{\text{r}}$
$\overrightarrow{\text{a}}.\overrightarrow{\text{r}}$
$\overrightarrow{\text{F}}.\overrightarrow{\text{r}}$
One cannot see through fog because .......... :
If current flowing through shell of previous objective is equal to i, then energy density at a point distance 2R from axis of the shell varies according to the graph
|
(a)
|
(b)
|
(c)
|
(d)
|
The capacitor of capacitance 4 μF and 6 μF are connected in series. A potential difference of 500 volts is applied to the outer plates of the two capacitor system. The potential difference across the plates of capacitor of 4 μF capacitance is
|
(a) 500 volts |
(b) 300 volts |
(c) 200 volts |
(d) 250 volts |
