The graph between wave number (
) and angular frequency (w) is
|
(a)
|
(b)
|
(c)
|
(d)
|
The graph between wave number (
) and angular frequency (w) is
|
(a)
|
(b)
|
(c)
|
(d)
|
(a)

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An electric wire is connected across a cell of e.m.f. E. The current I is measured by an ammeter of resistance R. According to ohm's law
|
(a) |
(b) E = IR |
(c) E = R/I |
(d) E = I/R |
In the circuit shown in the figure, the current flowing in 2 Ω resistance
|
(a) 1.4 A |
(b) 1.2 A |
(c) 0.4 A |
(d) 1.0 A |
The current passing through a choke coil of 5 henry is decreasing at the rate of 2 ampere/sec. The e.m.f. developing across the coil is
|
(a) 10 V |
(b) – 10 V |
(c) 2.5 V |
(d) – 2.5 V |
In radio theraphy, X-rays are used to
| (a) Detect bone fractures |
(b) Treat cancer by controlled exposure |
| (c) Detect heart diseases | (d) Detect fault in radio receiving circuits |
$\sqrt{\frac{\text{GM}}{4\text{R}}}$
$\sqrt{\frac{\text{RM}}{2\text{R}}}$
$\sqrt{\frac{\text{GM}}{\text{R}}}$
$\sqrt{\frac{2\text{GM}}{\text{R}}}$