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Engineering Physics II Practice Test 5


Correct Answer: 2 points | Wrong: -1 point
Grades: A* (100% score) | A (80%-99%) | B (60%-80%) | C (40%-60%) | D (0%-40%)
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1. Which of the following shows the laser transition in Neon in He-Ne laser?

2. What will be the relative population of atoms in a ruby layer that produces a light beam of wavelength 6943 Å at 300 K.

3. What is the general lifetime of an atom in an exited state?

4. Which of the following is a four-level laser?

5. The highest powered CO2 laser had a power of _________

6. The meta-stable state have a larger lifetime then lower energy state.

7. Between which two layers, population inversion takes place?
engineering-physics-questions-answers-population-inversion-q9

8. What is the region enclosed by the optical cavity called?

9. Semiconductors lasers do not need mirrors to form optical cavity.

10. The number of photons emitted for a 2.5 mW He-Ne laser is __________


 

Manish Bhojasia - Founder & CTO at Sanfoundry
Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He lives in Bangalore, and focuses on development of Linux Kernel, SAN Technologies, Advanced C, Data Structures & Alogrithms. Stay connected with him at LinkedIn.

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