Virtual Labs

Determine the wavelength of sodium light by Newtons ring experiment.

1. The shape of the fringes observed in interference is ____________

a: Straight Explanation

Explanation

b: Circular Explanation

Explanation

c: Hyperbolic Explanation

Explanation

d: Elliptical Explanation

Explanation

2. Zero order fringe can be identified using ____________

a: White light Explanation

Explanation

b: Monochromatic light Explanation

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c: Laser light Explanation

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d: Infrared light Explanation

Explanation

3. The shape of the pattern depends on the ____________

a: Distance between the slits Explanation

Explanation

b: Distance between the slits and the screen Explanation

Explanation

c: Wavelength of light Explanation

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d: Shape of the slit Explanation

Explanation

4. A wedge-shaped film has ____________

a: Non-uniform thickness Explanation

Explanation

b: Zero thickness at one end and increasing towards the other end Explanation

Explanation

c: Zero thickness at both ends Explanation

Explanation

d: Thickness increases and decreases alternately Explanation

Explanation

5. If a plane mirror is used in place of a glass plate in Newton's Ring experiment, ____________

a: Multicolored fringes are seen Explanation

Explanation

b: Only bright fringes are seen Explanation

Explanation

c: No fringes are seen Explanation

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d: Only dark fringes are seen Explanation

Explanation

6. What happens to the fringe width if the wavelength of light increases?

a: Fringe width decreases Explanation

Explanation

b: Fringe width increases Explanation

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c: Fringe width remains the same Explanation

Explanation

d: Fringe width becomes zero Explanation

Explanation

7. In a double-slit experiment, the intensity at a point is zero when ____________

a: The path difference is a multiple of wavelength Explanation

Explanation

b: The path difference is an odd multiple of half the wavelength Explanation

Explanation

c: The slits are equidistant from the point Explanation

Explanation

d: The screen is moved further away from the slits Explanation

Explanation