Engineering Physics II Mock Test 5

10%

Question 1 of 10

1. During Population inversion, which of the following processed is dominant?

Spontaneous Absorption

Stimulated Absorption

Stimulated Emission

Spontaneous Emission

Question 1 of 10

Question 2 of 10

2. The following figure shows a __________

X-ray diffraction

X-ray tube

X-ray scanner

X-ray crystallographer

Question 2 of 10

Question 3 of 10

3. In the CO₂ molecular gas laser, transition takes place between the ______________

Vibrational states

Atomic states

Energy states

Molecular states

Question 3 of 10

Question 4 of 10

4. In Stimulated emission, the emitted photons are _____________

Coherent and Monochromatic

Non-coherent and monochromatic

Non-Coherent and Non-monochromatic

Coherent and Non-Monochromatic

Question 4 of 10

Question 5 of 10

5. When X-ray are incident on an atom, they make an electronic cloud move.

False

True

Question 5 of 10

Question 6 of 10

6. Which material is used for cooling of the ruby rod for efficient continuous operation?

Liquid helium

Liquid Nitrogen

CFC

Liquid oxygen

Question 6 of 10

Question 7 of 10

7. The following graph is pictorial representation of _____________

Stimulated Absorption

Spontaneous Absorption

Spontaneous emission

Stimulated emission

Question 7 of 10

Question 8 of 10

8. The energy levels of which ion/atom/molecule are responsible for lasing action?

Cr₂O₃

Al₂O₃

Cr³⁺

Al³⁺

Question 8 of 10

Question 9 of 10

9. Direct conversion of electrical energy into radiation takes place in ___________

Ruby laser

He-Ne laser

ND: YAG

LED

Question 9 of 10

Question 10 of 10

10. X-Rays can be focused on to single point.

False

True

Question 10 of 10