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PU CSS 2026 Practice Test Physics Atomic Spectra Free Quiz 1

PU CSS Quiz

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PU CSS 2026 Practice Test Physics Atomic Spectra Free Quiz 1

Practice PU CSS 2026 Physics MCQs from Atomic Spectra. Get instant results with Explanation.

General10 MCQs

1. What does the hydrogen spectrum consist of?

A. Several series (Lyman, Balmer, Paschen, etc.)B. Only one seriesC. Continuous spectrumD. X-ray spectrum

2. Where does the Lyman series lie?

A. Visible regionB. Ultraviolet regionC. Infrared regionD. X-ray region

3. What are energy levels in an atom?

A. Discrete (quantized)B. ContinuousC. RandomD. Zero

4. What is the ground state of an atom?

A. Highest energy stateB. Ground state (n = 1)C. Excited stateD. Ionized state

5. What is an excited state?

A. Ground stateB. Ionized stateC. Excited state (n > 1)D. Zero energy state

General10 MCQs

6. What is the energy difference between two energy levels?

A. ΔE = h/λB. ΔE = c/λC. ΔE = hλD. ΔE = hf

7. What is excitation in atoms?

A. Raising from lower to higher energy stateB. Lowering from higher to lower energy stateC. Removing an electron completelyD. Returning to ground state

8. What is emission in atoms?

A. ExcitationB. EmissionC. IonizationD. Absorption

9. What does LASER stand for?

A. Light Amplification by Stimulated Emission of RadiationB. Light Amplification by Spontaneous Emission of RadiationC. Light Absorption by Stimulated Emission of RadiationD. Light Amplification by Stimulated Energy of Radiation

10. What are the properties of laser light?

A. Polychromatic and incoherentB. Monochromatic, coherent, and highly directionalC. Multicolor and divergentD. Incoherent and divergent

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