Explanation:
Charge distribution:
Due to charge distribution, intersection by the closed surface of conducting sphere containing the positive charge. So we can say that the flux of the electric field through the closed surface will become positive.
$\therefore\phi=\frac{\text{q}_{\text{in}}}{\in_0}\Rightarrow+\text{ve}$
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The ratio of real depth to apparent depth is called the the:
A parallel plate condenser is filled with two dielectrics as shown. Area of each plate is 
and the separation is t metre . The dielectric constants are 
and 
respectively. Its capacitance in farad will be
|
(a) |
(b) |
(c) |
(d) |
Range of frequencies allotted for commercial FM radio broadcast is
|
(a) 88 to 108 MHz |
(b) 88 to 108 kHz |
(c) 8 to 88 MHz |
(d) 88 to 108 GHz |
The image distance of an object placed 10 cm in front of a thin lens of focal length + 5 cm is
|
(a) 6.5 cm |
(b) 8.0 cm |
(c) 9.5 cm |
(d) 10.0 cm |
The threshold wavelength for photoelectric effect of a metal is 6500 Å. The work function of the metal is approximately
|
(a) 2 eV |
(b) 1 eV |
(c) 0.1 eV |
(d) 3 eV |
