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Bihar Board Class 12 · Physics · 13 past questions

Topic Bohr orbits: radius and angular momentum 1 Energy of the electron in hydrogen 1 Spectra and lasers 1 Atomic structure and nucleus 0 Bohr model: postulates and limitations 0 Hydrogen spectral series 0

Level Easy 1 Moderate 0

Year 2026 1 2025 0 2023 1 2021 0 2019 0 2018 0 2017 0

1 of 13 · show all

Q1 2026 Set A

The solar spectrum is