The equation
is
|
(a) b -emission |
(b) a -emission |
(c) e– capture |
(d) Fission |
The equation
is
|
(a) b -emission |
(b) a -emission |
(c) e– capture |
(d) Fission |
(a) b -emission
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The focal length of a convex mirror is 20 cm its radius of curvature will be
|
(a) 10 cm |
(b) 20 cm |
(c) 30 cm |
(d) 40 cm |
The value of internal resistance of an ideal cell is
|
(a) Zero |
(b) 0.5 Ω |
(c) 1 Ω |
(d) Infinity |
A short-circuited coil is placed in a time-varying magnetic field. Electrical power is dissipated due to the current induced in the coil. If the number of turns were to be quadrupled and the wire radius halved, the electrical power dissipated would be
|
(a) Halved |
(b) The same |
(c) Doubled |
(d) Quadrupled |
Four capacitors are connected in a circuit as shown in the figure. The effective capacitance in μF between points A and B will be
|
(a) |
(b) 4 |
(c) 5 |
(d) 18 |
For the given circuit of PN-junction diode, which of the following statement is correct
|
(a) In forward biasing the voltage across R is V |
|
(b) In forward biasing the voltage across R is 2V |
|
(c) In reverse biasing the voltage across R is V |
|
(d) In reverse biasing the voltage across R is 2V |
$\vec{\text{v}},\ \vec{\text{v}}_1$ 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 $\vec{\text{v}}.$