When yellow light is incident on a surface, no electrons are emitted while green light can emit. If red light is incident on the surface, then
|
(a) No electrons are emitted |
|
(b) Photons are emitted |
|
(c) Electrons of higher energy are emitted |
|
(d) Electrons of lower energy are emitted |
(a) No electrons are emitted
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The binding energy per nucleon is maximum in the case of
|
(a) |
(b) |
(c) |
(d) |
An a particle is accelerated through a p.d of 
volt then K.E. of particle will be
|
(a) 8 MeV |
(b) 4 MeV |
(c) 2 MeV |
(d) 1 MeV |
The imaginary line passing through the pole and the center of curvature of the curved mirror is called its _______.
A 100 turns coil shown in figure carries a current of 2 amp in a magnetic field 
. The torque acting on the coil is
|
(a) 0.32 Nm tending to rotate the side AD out of the page |
|
(b) 0.32 Nm tending to rotate the side AD into the page |
|
(c) 0.0032 Nm tending to rotate the side AD out of the page |
|
(d) 0.0032 Nm tending to rotate the side AD into the page |
