The potential difference between points A and B of adjoining figure is
|
(a) |
(b) |
(c) |
(d) 2 V |
The potential difference between points A and B of adjoining figure is
|
(a) |
(b) |
(c) |
(d) 2 V |
(c)
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The electron in the beam of a television tube move horizontally from south to north. The vertical component of the earth's magnetic field points down. The electron is deflected towards
|
(a) West |
(b) No deflection |
(c) East |
(d) North to south |
Albedo is maximum for
|
(a) Pluto |
(b) Venus |
(c) Earth |
(d) Mercury |
In Young's double slit experiment, if the widths of the slits are in the ratio 4 : 9, the ratio of the intensity at maxima to the intensity at minima will be
|
(a) 169 : 25 |
(b) 81 : 16 |
(c) 25 : 1 |
(d) 9 : 4 |
The equivalent resistance between points A and B of an infinite network of resistances each of 1Ω connected as shown, is
|
(a) Infinite |
(b) 2 Ω |
(c) |
(d) Zero |
Assertion : The earth’s magnetic field does not affect the working of a moving coil galvanometer.
Reason : Earth’s magnetic field is very weak.
|
(a) If both assertion and reason are true and the reason is the correct explanation of the assertion. |
|
(b) If both assertion and reason are true but reason is not the correct explanation of the assertion. |
|
(c) If assertion is true but reason is false. |
|
(d) If the assertion and reason both are false. |
The radius of curvature of convex surface of a thin plano-convex lens is 15 cm and refractive index of its material is 1.6. The power of the lens will be
|
(a) + 1D |
(b) -2D |
(c) +3D |
(d) +4D |