Virtual Labs

Tools

Aim

Theory

Pretest

Procedure

Simulation

Posttest

References

Contributors

Feedback

Aim

Theory

Pretest

Procedure

Simulation

Posttest

References

Contributors

Feedback

Study and use of Optical flats

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Beginner

Intermediate

Advanced

1. What does the interference pattern reveal in optical flats?

a: Surface curvature Explanation

Explanation

b: Colour variation Explanation

Explanation

c: Deviation in flatness Explanation

Explanation

d: Refractive indices Explanation

Explanation

2. Why monochromatic light source is used with optical flats?

a: Increases surface reflectivity Explanation

Explanation

b: Enhances colour contrast Explanation

Explanation

c: Simplifies interference patterns Explanation

Explanation

d: Minimizes diffraction patterns Explanation

Explanation

3. What is the diameter range of optical flats used for the flatness test?

a: 50 mm to 500 mm Explanation

Explanation

b: 1 mm to 100 mm Explanation

Explanation

c: 25 mm to 300 mm Explanation

Explanation

d: 1 mm to 10 mm Explanation

Explanation

4. When regular fringes are obtained using optical flat?

a: Perfectly flat surface Explanation

Explanation

b: Convex surface Explanation

Explanation

c: Concave surface Explanation

Explanation

d: Both a & b Explanation

Explanation

5. When fringes are obtained curved away from line of contact in optical flat test?

a: For convex surface Explanation

Explanation

b: For flat surface Explanation

Explanation

c: For concave surface Explanation

Explanation

d: All of the above Explanation

Explanation

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