In the nuclear reaction
is
|
(a) |
(b) |
(c) |
(d) |
In the nuclear reaction
is
|
(a) |
(b) |
(c) |
(d) |
(c)
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The maximum magnification that can be obtained with a convex lens of focal length 2.5 cm is (the least distance of distinct vision is 25 cm)
|
(a) 10 |
(b) 0.1 |
(c) 62.5 |
(d) 11 |
In Young's double slit experiment, angular width of fringes is 0.20o for sodium light of wavelength 5890 Å. If complete system is dipped in water, then angular width of fringes becomes
|
(a) 0.11o |
(b) 0.15o |
(c) 0.22o |
(d) 0.30o |
Nuclear binding energy is equivalent to
|
(a) Mass of proton |
(b) Mass of neutron |
|
(c) Mass of nucleus |
(d) Mass defect of nucleus |
A charged particle of mass 5
is held stationary in space by placing it in an electric field of strength
directed vertically downwards. The charge on the particle is
|
(a) -20 |
(b) -5 |
(c) 5 |
(d) 20 |
The correct order of ionizing capacity of α, β and γ - rays is
|
(a) α > γ > β |
(b) α > β > γ |
(c) α < β <γ |
(d) α > β > γ |
An electron is moving with constant velocity along x - axis. If a uniform electric field is applied along y- axis, then its path in the x - y plane will be
|
(a) A straight line |
(b) A circle |
(c) A parabola |
(d) An ellipse |
The capacity of an air condenser is 2.0 mF. If a medium is placed between its plates. The capacity becomes 12 mF. The dielectric constant of the medium will be
|
(a) 5 |
(b) 4 |
(c) 3 |
(d) 6 |