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Bihar Board Class 12 · Physics · 13 past questions

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1. Q1 2026 Set A

   The solar spectrum is

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2. Q2 2026 Set A

   The radius of the lowest Bohr's orbit in hydrogen atom is $r_0$. The radius of Bohr's second orbit is

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3. Q4 2025 Set D

   Which series of hydrogen spectrum lies in visible portion?

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4. Q5 2023 Set F

   The nucleus of any atom is made up of

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5. Q6 2023 Set F

   LASER action needs

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6. Q7 2023 Set F2019

   Describe the two shortcomings of Bohr model of atom.

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7. Q8 2021 Set A

   Bohr's frequency condition is

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8. Q9 2021 Set A

   Which of the following is not a fundamental particle?

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9. Q10 2021 Set A

   The minimum orbital angular momentum of an electron in a hydrogen atom is

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10. Q11 2018

    The minimum angular momentum of electron in Hydrogen atom will be…

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11. Q12 2017

    Which series of hydrogen spectrum does not lie in infrared region?

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12. Q13 2017

    The energy of electron in first Bohr orbit of hydrogen atom is-13.6eV.

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