Back to ATOMS
Your Progress
0 / 8 Answered
0
Correct
0
Incorrect
0%
Accuracy
JEE • PHYSICS • ATOMS
Atoms practice · Easy
Try a question, then open “View answer” to check it. Sign in to submit answers and save progress.
Practice format and chapter quiz
These sets use single-correct-answer MCQs. They do not cover every JEE Main or JEE Advanced question format and are not full-length mock papers.
Take a chapter quiz →
1
Easy
1 of 8
Understanding
+4 | -1
Which of the following is not the property of cathode rays?
View answer and explanation
Correct option: B
It does not deflect in an electric field.
Option B (It does not deflect in an electric field) is correct because cathode rays are streams of electrons and are therefore deflected by electric fields.
2
Easy
2 of 8
Remembering
+4 | -1
The value of angular momentum for ion in the first Bohr orbit is:
View answer and explanation
Correct option: A
Option A () is correct because the angular momentum in the first Bohr orbit (n=1) is given by L = nh/2π.
3
Easy
3 of 8
Analyzing
+4 | -1
In Bohr's theory for hydrogen-like atoms:
View answer and explanation
Correct option: C
In hypothetical condition if mass of the revolving electron is increased, electron velocity in the orbit will remain exactly same
Option C (In hypothetical condition if mass of the revolving electron is increased, electron velocity in the orbit will remain exactly same) is correct because the electron's velocity in Bohr's theory is independent of the electron's mass.
4
Easy
4 of 8
Application
+4 | -1
The number of different wave lengths may be observed in the spectrum from a hydrogen sample if the atoms are excited to fourth excited state is
View answer and explanation
Correct option: C
10
Option C (10) is correct because the number of different wavelengths observed in the spectrum is calculated using the formula N = n(n-1)/2, where n is the energy level.
5
Easy
5 of 8
Understanding
+4 | -1
The energy of the characteristic X-ray photon in Coolidge tube comes from
View answer and explanation
Correct option: B
The kinetic energy of the free electrons of the target
Option D is correct because the characteristic X-ray photon energy comes from the electronic transitions within the target atom.
6
Easy
6 of 8
Application
+4 | -1
The ratio of the magnitude of the kinetic energy to the potential energy of an electron in the excited state of a hydrogen atom is :
View answer and explanation
Correct option: D
Option D () is correct because the kinetic energy is half the magnitude of the potential energy for an electron in any orbit of a hydrogen atom.
7
Easy
7 of 8
Understanding
+4 | -1
is energy of photon of aluminium, is energy of photon of aluminium and is energy of photon from sodium, then the correct order of energies is given:
View answer and explanation
Correct option: D
Option D () is correct because photons have higher energy than photons for the same element, and the energy of photons increases with atomic number.
8
Easy
8 of 8
Remembering
+4 | -1
The path of scattered -particles is
View answer and explanation
Correct option: D
Hyperbolic
Option D (Hyperbolic) is correct because the path of scattered alpha particles in Rutherford's experiment is hyperbolic due to the repulsive Coulomb force between the alpha particles and the nucleus.
Revision notes and key takeaways
Review ATOMS in your textbook or class notes, then use this set to check your understanding.
Key Takeaways
- ✓ This set contains 8 single-correct-answer MCQs on ATOMS.
- ✓ Try each question before opening its answer. Read the explanation where one is available.
- ✓ Sign in to save submitted answers. Revisit incorrect answers alongside your textbook or class notes.
Continue Your Practice
📚 Switch Set (EASY)
0
/8
0✓
0✗
0% Accuracy