463 questions across 1 question group — pick any mix to generate a Physics paper with step-by-step answer keys.
One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
A proton, a deutron and an a-particle having the same momentum, enters a region of uniform electric field between the parallel plates of a capacitor. The electric field is perpendicular to the initial path of the particles. Then the ratio of deflections suffered by them is
|
(a) 1 : 2 : 8 |
(b) 1 : 2 : 4 |
(c) 1 : 1 : 2 |
(d) None of these |
The work function of a metal is 1.6 
J. When the metal surface is illuminated by the light of wavelength 6400 Å, then the maximum kinetic energy of emitted photo-electrons will be (Planck's constant h = 6.4 
)
|
(a) 14 |
(b) 2.8 |
(c) 1.4 |
(d) 1.4 |
The ratio of de-Broglie wavelength of a a-particle to that of a proton being subjected to the same magnetic field so that the radii of their path are equal to each other assuming the field induction vector 
is perpendicular to the velocity vectors of the a-particle and the proton is
|
(a) 1 |
(b) |
(c) |
(d) 2 |
The energy of a photon of wavelength 
is given by
|
(a) h |
(b) ch |
(c) |
(d) |
In a dark room of photography, generally red light is used. The reason is
|
(a) Most of the photographic films are not sensitive to red light |
|
(b) The frequency for red light is low and hence the energy hv of photons is less |
|
(c) (a) and (b) both |
|
(d) None of the above |
Pick question groups from the list above, set marks and difficulty, and export a branded PDF with step-by-step answer keys. First 3 chapters free — no signup.
