.3 X-rays of wavelength =1.5×10-1º m , are reflected by the (221) plane. Calculate Bragg angle from the given plane if a = 3x10-10 m, b= 3.5 x 10-1° m and c = 8 x10¬10 m.

the normal human eye can detect colors whose wavelengths range from 380 nm to about NOTE: 1 n m = 10 − 9 m ( o r 1 m = 10 9 n m ) Group of answer choices 600 nm. 750 nm. 550 nm. 650 nm.

10. A light ray of given wavelength, initially in air, strikes a 90° prism at P (see Fig. 39-53) and is refracted there and at Q to such an extent that it just grazes the right-hand prism surface at Q. (a) Determine the index of retraction of the prism for this wavelength in terms of the angle of incidence , that gives rise to this situation. (b) Give a numerical upper bound for the index of refraction of the prism. Show, by ray dia- grams, what happens if the angle of incidence at P is (c) slightly greater or (d) slightly less than 0₁. 90 FIGURE 39-53. Problem 10.

7. A boost volume is drawn on skin and measures 12 X 11.5cm on the patient's skin. The treatment distance is 105cm SSD. What is the Effective F/S at 100cm?

What is the refractive index of the material in which the speed of light is 1.28×108 m/s. (c = 3.0 × 108 m/s) O 1.12 O 1.20 1.80 1.65 O 2.34

How thick is a layer of oil floating on a 52cm bucket of water. You measure your laser beam to take 2.33 ns going straight through the layers

How many centimetres is the light ray displaced after passing through the 5.50 cm thick sheet of material (n = 1.30) with an incident angle of θ = 34.0 °?

Thanks

A light ray whose frequency is 7.00 x 1014 Hz in vacuum is incident on glass (n=1.50). Determine the wavelength of the light after it enters the glass (in nm). (c=3x10% m/s)