Atoms and Nuclei Quiz – JEE Main 2026 | NEET JEE Rankers

Atoms and Nuclei – JEE Main 2026 Quiz

10 Questions | MCQ + Numerical | Instant Result

Q1. A nucleus has mass number A₁ and volume V₁. Another nucleus has A₂ = 4A₁. Find V₂ / V₁.

Q2. The required energy to remove a neutron from C¹³ nucleus is approximately:

62.5 MeV

6.25 MeV

4.95 MeV

49.5 MeV

Q3. Minimum potential difference to observe Balmer series is α/10 V. Find α.

Q4. Radius of Li²⁺ ion in ground state is a₀/X. Find X.

2

9

1

3

Q5. Frequency of revolution of electron in Bohr orbit varies as:

1/n⁴

1/n²

1/n³

1/n

Q6. Number of spectral lines emitted when hydrogen atom absorbs 10.2 eV:

3

6

10

1

Q7. Angular momentum of electron in 4th orbit is:

2h/π

h/2π

h/π

8h/π

Q8. Angular momentum of electron is proportional to:

1/r

1/√r

√r

r

Q9. Correct relativistic energy relation is:

E² = pc² + m²c⁴

E² = pc² + m²c²

E² = p²c² + m²c⁴

E² = p²c² + m²c²

Q10. Recoil speed of hydrogen atom is x/5 m/s. Find x.

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