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Physics — Senior

Mechanics, thermodynamics, optics, waves, and electromagnetism — Class IX–XI

Sample Practice Questions

According to Bohr's model, angular momentum of an electron is quantised as:
- mvr = nh
- mvr = nh/(2π)
- mv²r = nh
- mvr = h/n
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Answer: mvr = nh/(2π)
Which of the following has the highest penetrating power?
- Alpha particles
- Beta particles
- Gamma rays
- X-rays
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Answer: Gamma rays
A transformer works on which principle?
- Self-induction
- Mutual induction
- Lenz's law
- Faraday's first law
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Answer: Mutual induction
Which of Newton's laws explains why rockets work in space?
- First law
- Second law
- Third law (action-reaction)
- Law of gravitation
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Answer: Third law (action-reaction)

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Practice Questions

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