# Physics

posted by .

Problem 17.26

A thin film of (MgF2) n= 1.38 coats a piece of glass. Constructive interference is observed for the reflection of light with wavelengths of 500nm and 625nm .

Part A -

What is the thinnest film for which this can occur?

• Physics -

906nm

## Similar Questions

1. ### Physics -Interference & Diffraction

Given Information: Light of wavelength 631 nm passes through a diffraction grating having 485 lines/mm. Part A: What is the total number of bright spots (indicating complete constructive interference) that will occur on a large distant …
2. ### Physics

What is the thinnest film of a coating with n=1.42 on glass n=1.52 for which destructive interference of the red component (650 nm) of an incident white light beam in air can take place by reflection?
3. ### Physical Science

These are two questions that I need help with: 1.What statement about light traveling through water and glass is true?
4. ### physics

Would you see the same thin film interference pattern in a film of soap surrounded by air and a film of soap on glass?
5. ### physics

Would you see the same thin film interference pattern in a film of soap surrounded by air and a film of soap on glass?
6. ### Physics

In one section of the pool, there is a thin film of oil on the surface of the water. The thickness of the film is 1.0 X l0^-7 meter and the index of refraction of the oil is 1.5. The light source is now held in the air and illuminates …
7. ### physics

monochromatic light of wavelength λ=800nm illuminates normally a thin liquid film with nf =4/3 and t=500nm lying on a glass of refractive index n=2.5 The liquids refractive index can be continuously increased up to some limiting …
8. ### physics

A coating of MgF2 (n = 1.38) is deposited on a glass plate (n = 1.50). Light is incident (from air) onto the plate at angle 60¡ã degrees from the normal to the surface. (Note that this is not nearnormal incidence and you will have …
9. ### PHYSICS

What is the thinnest film of a coating with n=1.42 on glass n=1.52 for which destructive interference of the red component (650 nm) of an incident white light beam in air can take place by reflection?
10. ### physics

An object emitting 500nm wavelength light moves away from you at half of the speed of light. What is the observed wavelengths of the light?

More Similar Questions