An electron is accelerated through a potential difference of 200 volts. If e/m for the electron be 1.6 
coulomb/kg, the velocity acquired by the electron will be
|
(a) 8 |
(b) 8 |
(c) 5.9 |
(d) 5.9 |
(a) 8 
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
If a rod has resistance 4 W and if rod is turned as half cycle then the resistance along diameter
|
(a) 1.56 W |
(b) 2.44 W |
(c) 4 W |
(d) 2 W |
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 |
Atom bomb consists of two pieces of 
and a source of
|
(a) Proton |
(b) Neutron |
(c) Meson |
(d) Electron |
The fact that photons carry energy was established by
|
(a) Doppler's effect |
(b) Compton's effect |
|
(c) Bohr's theory |
(d) Diffraction of light |
