Quiz on Polariscope

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Quiz on Polariscope

MESCOE MECH SM VLab.

1. Which type of Polariscope is used if the fringe pattern obtained have both isochromatic and isoclinic fringes. *

1 point

Plane Polariscope

Circular Polariscope

Both Plane and Circular Polariscope

None of the above

2. What happens to the fringe pattern, if we increase the load? *

1 point

Number of fringes get increased

Number of fringes get decreased

No change in number of fringes

None of the above

3. Which phenomenon will occur, when polarized light is passed through the transparent specimen? *

1 point

Refraction

Reflection

Birefraction

None of the above

4. In casting process, if the volume of material is increased when it is cool from liquid to solid state. Then which type of force is applied by inner core to external area of material. *

1 point

Tensile

Compressive

No force is applied

None of the above

5. Which type of light source is use in following specimen? *

1 point

White light

Monochromatic light

Both white and monochromatic light

None of the above

6. Choose correct option about Circular Polariscope and Plane Polariscope. *

1 point

In Plane Polariscope we get both isochromatic and isoclinic fringes

In Circular Polariscope we observe only isoclinic fringes

In Circular Polariscope we observe only isochromatic fringes

Both 1 and 2

Both 1 and 3

7. Birefringence phenomenon is increases when *

1 point

Retardation (R) increases

Thickness of specimen (t) increases

Thickness of specimen (t) decreases

Both 1 and 2

Both 1 and 3

8. Choose correct option about Polariscope experiment. *

1 point

When we use monochromatic light source, we get colorful fringe pattern

When we use white light source, we get single colored fringe pattern

When we use white light source, we get colorful fringe pattern

Both 2 and 3

9. If we put the angle between optical axis of polarizer and analyzer perpendicular to each other in light source. What we will observe at analyzer? *

1 point

No light

Brighter than source

Some light

None of the above

10. Intensity of First fringe is greater than other fringes because of. *

1 point

Intensity of light decreases when they passes through polarizer and analyzer

Decrease in stress concentration

Increase in stress concertation

None of the above

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