MCQ
Rutherford’s atomic model was unstable because:
  • A
    Nuclei will break down.
  • B
    Electrons do not remain in orbit.
  • C
    Orbiting electrons radiate energy.
  • D
    Electrons are repelled by the nucleus.

Answer

  1. Electrons do not remain in orbit.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

Magnetic field does not cause deflection in:
  1. $\alpha-\text{rays}$
  2.  $\beta^+-\text{rays}$
  3.  $\beta^--\text{rays}$
  4.  $\gamma-\text{rays}$

In a hydrogen atom, the distance between the electron and proton is 2.5 . The electrical force of attraction between them will be

(a) 2.8  

(b) 3.7  

(c) 6.2  

(d) 9.1  

A glass rod rubbed with silk is used to charge a gold leaf electroscope and the leaves are observed to diverge. The electroscope thus charged is exposed to X-rays for a short period. Then

(a) The divergence of leaves will not be affected

(b) The leaves will diverge further

(c) The leaves will collapse

(d) The leaves will melt

For any charge configuration, equipotential surface through a point is _____ to electric field at that point.
Characteristic of electromagnetic wave is shown by:
What is the space around a current-carrying conductor, in which its magnetic effect can be experienced called?

Which of the following will produce greater chromatic aberration?

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 

If proton moves with velocity $10 \hat{i} m / s ^{-1}$ in magnetic field having magnitude $5 \hat{j}$ T. magnetic force acting on it is __________ N .
A smaller sphere has potential 50V and a larger sphere has potential 100V. How should they be placed so that if they are connected with the help of a wire, the charge will flow from the smaller sphere to the larger sphere? Both the spheres are conducting and hollow.