Test Details

Atoms

Do fast

Mar 19, 12:00 PM

30 minutes

Mar 20, 1:00 PM

55.0 marks

MCQ

30 questions

Raushan Kumar

Raushan Kumar B.Tech., M. Tech., IIT Delhi MBA , University of California Former Deputy CEO Boeing Company * Produced AIR - 5 and 360 in IIT-JEE 2021 * Saket Jha scores 100 percentile in JEE main 2021 * Produced AIR -20 in NEET

Class Details

Physics

Mahasamkalp - 2

Physics

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Question Text

Question 2 :
An electron with kinetic energy 5 eV is incident on ahydrogen atom in its ground state. The collision

Question 3 :
Assertion: Neutrons penetrate matter more readily as compared to protons. Reason: Neutrons are slightly more massive than protons.

Question 4 :
Assertion: The force of repulsion between atomic nucleus and $\alpha$-particle varies with distance according to inverse square law. Reason: Rutherford did $\alpha$-particle scattering experiment.

Question 5 :
In 1911, the physicist Ernest Rutherford discovered that atoms have a tiny, dense nucleus by shooting pisitively charged particular at a very thin gold foil. A key physical property which led Rutherford to use gold that it was

Question 6 :
Particles used in the Rutherford's scattering experiment to deduce the structure of atoms.

Question 7 :
What is the purpose of anode in a Cathode ray tube?

Question 8 :
According to Rutherford atom model, the spectrum emitted by an atom is :

Question 9 :
Ruthen-ford used which of the following elements in his scattering experiment

Question 10 :
According to classical theory, the path of electron in Rutherford atom nuclei is

Question 12 :
The Rutherford $\alpha$-particle experiment shows the most of the $\alpha$-particles pass through almost unscattered while some are scattered through large angles. What information does it give about the structure of the atom?

Question 13 :
Which statement about the Rutherford model of the atom is NOT true?

Question 14 :
Assertion: The force of repulsion between atomic nucleus and $\alpha$-particle varies with distance according to inverse square law. Reason: Rutherford did $\alpha$-particle scattering experiment.

Question 16 :
The scientist who is credited with the discovery of 'nucleus' in an atom is

Question 17 :
In Rutherford scattering experiment, the correct angle of scattering of $\alpha-$ particles for impact parameter equal to zero is

Question 20 :
Which statement about the Rutherford model of the atomis NOT true ?

Question 21 :
When a hydrogen atom is raised from ground energy level to excited energy level, then

Question 22 :
In Rutherford experiment , number of particles scattered at$90^{0}$ angle are x per second . number of particles scattered oper second at angle$0^{0}$ is

Question 23 :
In Rutherford's alpha particle scattering experiment with thin gold foil, 8100 scintillations per minute are observed at an angle of 600. The number of scintillations per minute at an angle 1200 will be

Question 24 :
The $KE$ of the electron in an orbit of radius $r$ in hydrogen atom is : ($e=$ electric charge)

Question 25 :
The total energy of the electron in the hydrogen atom in the ground state is -13.6 eV. Which of the following is its kinetic energy in the first excited state?

Question 27 :
According to J J Thomson model,red part of watermelon was considered as-

Question 29 :
Which of the following statement hold true w.r.t. thomsons model atom

Question 30 :
Which of them are atomic models?<ol><li>Thomsons plum puddling model</li><li>Rutherfords nuclear model</li><li>Bohrs model</li><li>Sommerfelds model</li></ol>

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