Equivalent resistance between the points A and B is (in W)
|
(a) |
(b) 1 |
(c) 2 |
(d) 3 |
Equivalent resistance between the points A and B is (in W)
|
(a) |
(b) 1 |
(c) 2 |
(d) 3 |
(c) 2
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
When an electric dipole
is placed in a uniform electric field
then at what angle between
and
the value of torque will be maximum
|
(a) 90° |
(b) 0° |
(c) 180° |
(d) 45° |
The light rays having photons of energy 1.8 eV are falling on a metal surface having a work function 1.2 eV. What is the stopping potential to be applied to stop the emitting electrons
|
(a) 3 eV |
(b) 1.2 eV |
(c) 0.6 eV |
(d) 1.4 eV |
In a cyclotron, the angular frequency of a charged particle is independent of
|
(a) Mass |
(b) Speed |
(c) Charge |
(d) Magnetic field |
The dispersive power of the material of lens of focal length 20 cm is 0.08. The longitudinal chromatic aberration of the lens is
|
(a) 0.08 cm |
(b) 0.08/20 cm |
(c) 1.6 cm |
(d) 0.16 cm |
A radioactive sample is a-emitter with half life 138.6 days is observed by a student to have 2000 disintegration/sec. The number of radioactive nuclei for given activity are
|
(a) 3.45 × 1010 |
(b) 1 × 1010 |
(c) 3.45 × 1015 |
(d) 2.75 × 1011 |
A solid conducting sphere of radius R1 is surrounded by another concentric hollow conducting sphere of radius R2. The capacitance of this assembly is proportional to
|
(a) |
(b) |
(c) |
(d) |