Following is the relation between current and charge
then value of VL will be
|
(a) |
(b) |
(c) |
(d) |
Following is the relation between current and charge
then value of VL will be
|
(a) |
(b) |
(c) |
(d) |
(c)
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Electromagnetic waves are transverse in nature is evident by
|
(a) Polarization |
(b) Interference |
(c) Reflection |
(d) Diffraction |
A hollow conducting sphere of radius R has a charge (+Q) on its surface. What is the electric potential within the sphere at a distance r =
from its centre
|
(a) Zero |
(b) |
(c) |
(d) |
A star emitting radiation at a wavelength of 5000 Å is approaching earth with a velocity of 1.5. The change in wavelength of the radiation as received on the earth, is
|
(a) 25 Å |
(b) Zero |
(c) 100 Å |
(d) 2.5 Å |
A very long straight wire carries a current I. At the instant when a charge +Q at point P has velocity , as shown, the force on the charge is
|
(a) Opposite to OX |
(b) Along OX |
(c) Opposite to OY |
(d) Along OY |
A point object is placed at a distance of 10 cm and its real image is formed at a distance of 20 cm from a concave mirror. If the object is moved by 0.1 cm towards the mirror, the image will shift by about
|
(a) 0.4 cm away from the mirror |
(b) 0.4 cm towards the mirror |
|
(c) 0.8 cm away from the mirror |
(d) 0.8 cm towards the mirror |