Start learning →

MHT-CET Atoms — practice questions

Explore 80 free Atoms questions in MHT-CET Physics. Open each question or exercise to read its content, reference answers and available explanation.

Practise Atoms with Quill →

Atoms questions and exercises with answers

Showing questions 1–30 of 80.

Thomson's model of the atom was popularly given which name?Read the answer and worked solution →At Rutherford's suggestion, who performed the alpha-particle scattering experiments in 1911?Read the answer and worked solution →The thin metal foil used in the Geiger-Marsden scattering experiment was made of which metal?Read the answer and worked solution →In the Geiger-Marsden apparatus, scattered alpha particles produced flashes on a screen coated with what?Read the answer and worked solution →Roughly what fraction of incident alpha particles were deflected by more than 90 degrees?Read the answer and worked solution →Why do most alpha particles pass straight through a thin gold foil?Read the answer and worked solution →Rutherford's experiments suggested a nuclear size in which range?Read the answer and worked solution →In alpha scattering, what is the impact parameter?Read the answer and worked solution →How is an alpha particle with a large impact parameter deflected?Read the answer and worked solution →If an alpha particle's kinetic energy is doubled, its distance of closest approach to a nucleus becomes what?Read the answer and worked solution →What is the distance of closest approach of a 7.7 MeV alpha particle to a gold nucleus?Read the answer and worked solution →Why is the gold nucleus treated as stationary during alpha scattering?Read the answer and worked solution →Why do atomic electrons hardly affect alpha particles passing through a foil?Read the answer and worked solution →A hydrogen electron's total energy is negative. What does this mean?Read the answer and worked solution →For an electron in a circular orbit of hydrogen, the ratio of potential energy to kinetic energy is what?Read the answer and worked solution →What is the radius of the electron orbit in a ground-state hydrogen atom?Read the answer and worked solution →Approximately how fast does the electron move in the ground state of hydrogen?Read the answer and worked solution →Classically, what initial frequency of light would a ground-state hydrogen electron emit?Read the answer and worked solution →Classically, what should happen to an electron orbiting a nucleus?Read the answer and worked solution →Classical theory applied to Rutherford's atom predicts which kind of emitted spectrum?Read the answer and worked solution →How does the emission line spectrum of a low-pressure gas look?Read the answer and worked solution →White light passing through a gas shows dark lines at the gas's emission wavelengths. This is called what?Read the answer and worked solution →Bohr's first postulate lets an electron revolve in certain orbits how?Read the answer and worked solution →According to Bohr's second postulate, which quantity of the orbiting electron is quantised?Read the answer and worked solution →By Bohr's third postulate, an emitted photon's energy equals what?Read the answer and worked solution →How does the radius of the third Bohr orbit of hydrogen compare with the first?Read the answer and worked solution →What is the energy of a hydrogen electron in the n = 2 level?Read the answer and worked solution →How much energy excites a ground-state hydrogen atom to its first excited state?Read the answer and worked solution →Raising a ground-state hydrogen atom to the n = 3 level needs how much energy?Read the answer and worked solution →In the hydrogen energy level scheme, what energy corresponds to n equal to infinity?Read the answer and worked solution →

Worked practice questions

Thomson's model of the atom was popularly given which name?

  1. Planetary model
  2. Nuclear shell model
  3. Liquid drop model
  4. Plum pudding model
Show answer and solution

Correct answer: D. Plum pudding model

Thomson pictured electrons embedded in a uniform sphere of positive charge like seeds in a watermelon, hence plum pudding.

Open this question →

At Rutherford's suggestion, who performed the alpha-particle scattering experiments in 1911?

  1. Chadwick and Bothe
  2. Geiger and Marsden
  3. Thomson and Aston
  4. Davisson and Germer
Show answer and solution

Correct answer: B. Geiger and Marsden

H. Geiger and E. Marsden carried out the scattering experiments that Rutherford proposed.

Open this question →

The thin metal foil used in the Geiger-Marsden scattering experiment was made of which metal?

  1. Silver
  2. Gold
  3. Aluminium
  4. Copper
Show answer and solution

Correct answer: B. Gold

A very thin gold foil, about 2.1 x 10^-7 m thick, served as the target.

Open this question →

How to practise

  1. Choose a Atoms question and try to work out your answer.
  2. Open the question to check the correct answer and read its worked solution.
  3. Continue in the app for bite-sized lessons, explanations and review with Quill. You can start without creating an account.

More Physics topics

ElectrostaticsCurrent ElectricityOscillationsElectromagnetic InductionKinetic Theory of GasesMechanical Properties of FluidsWave OpticsThermodynamics