Light of wavelength 580NM is incident on a slit of width 2.75 × 10^-6 m. The observing screen is placed 2.00 m from the slit. 1) Find the width of central maximum 2) Say two things that would make width of the central maximum smaller?

3. A Cu target emits an X-ray line of wavelength = 1.54 Å. a) Given that the Bragg angle for reflection from the (111) planes in Al is 19.2°, compute the interplanar distance for these planes. Recall that aluminum has an fcc structure. b) Knowing that the density and atomic weight of Al are, respectively, 2.7 g/cm3 and 27.0, compute the value of Avogadro's number.

Find the distance of the slit separation given the following information: L = 1.87m,λ = 635.8 nm.  Calculate the slit separation for m=0, 1,2,3 for the bright and dark fringes.

If I have a light with a frequency of 5 x 10^14 what is the wave length in nm?

A car is traveling at 22.0 m/s when the driver suddenly applies the brakes, giving the car a constant deceleration. The car comes to a stop in a distance of 120.0 m. How fast was the car moving when it was 30.0 m past the point where the brakes were applied? O 23.5 m/s 15.0 m/s 7.50 m/s 19.1 m/s 28.0 m/s

Light from the He-Ne laser of wavelength 633 nm passes through a circular aperture. It is observed on a screen 2.00 m behind the aperture. The width of the central maximum is 3.40 cm what is the diameter of the hole? A. 45.4 micro meters B. 90.9 micro meters C. 3.40 centi meters D. 74.5 micro meters E. 633 nano meters

3. Calculate the polarization loss factor (PLF)...in db and dimensionless of an antenna whose electric field polarization is expressed as: E = (ax+ ay)E(r,0,0), when the electric field of the incident wave given by E, = ax E, (x, y)e-k=

A beam of coherent orange light in air (nD = 1.00029) strikes a piece of glass with a refractive index of 1.52 at an angle 24° from normal. a) What will the angle of refraction be? b) If coherent blue light were used instead, would the angle of refraction be larger or smaller? Explain why.