- A

- B

- C

- D






Explanation:
$\text{X}_\text{C}=\frac{1}{\text{C}2\pi\text{f}}$
XC and f are inversely proportional.
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Two wires of the same material and equal length are joined in parallel combination. If one of them has half the thickness of the other and the thinner wire has a resistance of 8 ohms, the resistance of the combination is equal to
|
(a) |
(b) |
(c) |
(d) |
Assuming photoemission to take place, the factor by which the maximum velocity of the emitted photoelectrons changes when the wavelength of the incident radiation is increased four times, is
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(a) 4 |
(b) |
(c) 2 |
(d) |
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(a) 17.29 × 109 m/s |
(b) 4.29 × 107 m/s |
(c) 3.39 × 105 m/s |
(d) 2.29 × 105 m/s |