Explanation:
Positive charges move from higher to lower potential whereas negative charges move from lower to higher potential. Hence, A is false. Electric potential does not have direction and is a scalar quantity.
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Binding energy of a nucleus is
|
(a) Energy given to its nucleus during its formation |
|
(b) Total mass of nucleus converted to energy units |
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(c) Loss of energy from the nucleus during its formation |
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(d) Total K.E. and P.E. of the nucleons in the nucleus |
A capacitor is charged to 200 volt it has 0.1 coulomb charge. When it is discharged, energy will be
|
(a) 1 J |
(b) 4 J |
(c) 10 J |
(d) 20 J |
The radius of curvature for a convex lens is 40 cm, for each surface. Its refractive index is 1.5. The focal length will be
|
(a) 40 cm |
(b) 20 cm |
(c) 80 cm |
(d) 30 cm |
The minimum wavelength of the X-rays produced by electrons accelerated through a potential difference of V volts is directly proportional to
(a) 
|
(b) 
|
(c) 1/
|
(d) 1/V |
An atomic nucleus 
emits several a and b radiations and finally reduces to 
. It must have emitted
|
(a) 4a and 2b |
(b) 6a and 4b |
(c) 8a and 24b |
(d) 4a and 16b |
In Thomson's experiment if the value of q/m is the same for all positive ions striking the photographic plate, then the trace would be
|
(a) Straight line |
(b) Parabolic |
(c) Circular |
(d) Elliptical |