A soap bubble (n = 1.33) is 215 nm thick. What is the longest (m = 1) wavelength IN NANOMETERS that gives a MINIMUM (destructive interference) at that point? (Hint: If you leave the wavelength in nm, the answer will be in nm. No conversion necessary.) (Unit = nm) %3D

When illuminating the observation screen directly, without any slits, you notice that the laser has a spread, meaning that the light on the screen becomes larger as you increase the distance between you and the screen. Determine the angular spread of the 710.5 nm wavelength laser beam if the circular aperture of the laser is 0.7 mm in diameter. Enter your answer in milli-rad with 2 decimal place precision

Light with wavelength i passes through a narrow slit of width w and is seen on a screen which is located at a distance D in front of the slit. The first minimum of the diffraction pattern is at distance d from the middle of the central maximum. Calculate the wavelength of light if D=3.1 m, d=1 mm and w = VAD. Give your answer in nanometers. Answer: nm Next page

The fringe of order (1.0000x10^0) is observed at an angle of (7.3000x10^0)° when light of wavelength (2.62x10^0) nm falls on two narrow slits. How far apart are the slits in micrometers? Give your answer to 3 sf. Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: x10 Answer

State the conditions necessary for interference to take place. In a Young's 2-slit experiment, the separation of the interference bands ?w is given by the equation: ?=??/? where ? is the wavelength of the light, ? is the distance from the double slit to the screen and ? is the distance between the slits. Given that ?=5 m, ?=0.25 cm and ? 618 nm, calculate the fringe width ?. Give your answer in millimetres.

air 1. n = 1 [a] The figure shows a soap film of thickness dį in air. Light impinges on the film with an angle of incidence 01 and is reflected and refracted at the interfaces. Rays 1 and 2 represents reflected light, while rays 3 and 4 represent light that has been transmitted into the glass. soap \[c] n, = 1.33 |d [b] air n= 1 3 4 The bracketed letters (a], [b], and [c] indicate reflections at the air-soap, and soap-air interfaces. For which of these reflections does a phase change of n occur? Check all that apply. [a] [b] O (c)

Problem 3: When laser light is passed through two narrow slits separated by 148 µm, an interference pattern is observed on a screen 1.67 m away. The distance between the central spot and the first-order constructive interference is found to be 5.3 mm. λ = Part (a) Find the wavelength of the laser light, in nanometers. || sin() cotan() atan() cosh() cos() asin() acotan() tanh() O Degrees Submit tan() acos() E ^^^ sinh() cotanh() Radians Hint () 7 BE * Feedback ∞52 63 1 8 9 4 5 + 0 END Vo BACKSPACE DEL CLEAR HOME I give up! Part (b) At what angle, in degrees, from the central spot is the second-order constructive interference formed?

Chapter 36, Problem 009 A slit 0.803 mm wide is illuminated by light of wavelength 481 nm. We see a diffraction pattern on a screen 3.68 m away. What is the distance in millimeters between the first two diffraction minima on the same side of the central diffraction maximum? Number Units Use correct number of significant digits; the tolerance is +/-2%

A soap bubble (n = 1.33) is 215 nm thick. What is the longest (m = 1) wavelength IN NANOMETERS that gives a MINIMUM (destructive interference) at that point? (Hint: If you leave the wavelength in nm, the answer will be in nm. No conversion necessary.) (Unit = nm) Enter

In the previous problem (Young's double slit experiment), given that D = 5 m, a = 0.25 cm and λ = 619 nm, calculate the fringe width w. Give your answer in millimetres. Answer: mm +