Two protons exerts a nuclear force on each other, the distance between them is
|
(a) |
(b) |
(c) |
(d) |
Two protons exerts a nuclear force on each other, the distance between them is
|
(a) |
(b) |
(c) |
(d) |
(a)
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A coil of self inductance 50 henry is joined to the terminals of a battery of e.m.f. 2 volts through a resistance of 10 ohm and a steady current is flowing through the circuit. If the battery is now disconnected, the time in which the current will decay to 1/e of its steady value is
|
(a) 500 seconds |
(b) 50 seconds |
(c) 5 seconds |
(d) 0.5 seconds |
One Tesla is equal to
|
(a) |
(b) |
(c) |
(d) |
A charged particle of mass 0.003 gm is held stationary in space by placing it in a downward direction of electric field of 6 . Then the magnitude of the charge is
|
(a) 5 |
(b) 5 |
(c) -18 |
(d) -5 |
Order of q/m ratio of proton, α -particle and electron is
|
(a) e > p > α |
(b) p > α > e |
(c) e > α > p |
(d) None of these |