1) Consider visible light, with wavelengths from 400 nm to 700 nm in air, passin

Question

1) Consider visible light, with wavelengths from 400 nm to 700 nm in air, passing through crown glass.2) Suppose a galaxy moving away from the Earth has a speed of 1050 km/s and emits 652 nm light from a particular atomic transition.

A) At what wavelength would we observe on the Earth in nm?

B) What type of electromagnetic radiation is this?

(7%) Problem 10: Consider visible light, with wavelengths from 400 nm to 700 nm in air, passing through crown glass Medium Gasses at 0°C, 1 atm n Medium Solids at 20C 2.419 1.434 1.000293 Diamond ir Carbon dioxide 100045 Fluorite Hydrogen Oxygen 1.52 1.000139 Glass, crown 1.000271 Glass, flint 1.66 1.49 Quartz, crystalline 1.544 1.309 Ice at 0 Polystyrene quids at 20 C Benzene 1.501 Carbon disulfide 1.628 Sodium chloride1544 Carbon tetrachloride 1.46 Ethanol Water, fresh Glycerine 1.36 Quartz, fused1.458 1.333 1.473 Zircon 1.923 50% Part (a) What is the minimum wavelength in, in nanometers, of visible light inside the crown glass? 50% Part (b) what is the maximum wavelength Amax, in nanometers, of visible light inside the crown glass? Grade Summary 0% 100% max Potential

Explanation / Answer

Qns 1 )

part a )

for minimum = 400 nm

n = 1.52 for crown glass

lambda' = lambdao/ n

lambda' = 400/1.52

lambda' = 263.16 nm

part b )

lambda = 700 nm

lambda' = lambda/n

lambda' = 700/1.52

lambda' = 460.53 nm

Qns 2 ) v = 292 m/s

lambda obs = lambda*sqrt([1+v/c] /[1-v/c] )

lambdaobs = 652.0006346

part b )

The radiation is visiable red light

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