Optics Answers

Find the maximum value of resolving power of a grating 3 cm wide having 5000 lines per cm, if the wavelength of light used is 5890 A0.

You have a  atom (3 protons) which is doubly ionized such that it has just one remaining electron. ()

How much energy, in electron volts, does it take to remove the remaining electron if it starts in the n = 1 orbital?

two spherical objects have masses of 7.5x10^3 kg and 9.2x19^7 kg. Their centers are separated by a distance of 2.5 x 10^3m. Find the gravitational attraction between them

For a crystal, the refractive index n_o for the o-ray is 1.5442 for light of wavelength 

6×10^-5 m. The least thickness of the crystal used as a quarter wave plate is found to 

be 1.65×10^-5 m. Determine the refractive index ne for the e-ray in this crystal.

A particular oil drop is suspended in a field with an intensity of 2.19 x 103N/C. If the apparent weight of the oil drop equal 1.4 x 10-15N. Calculate the charge of the oil drop in C?

A person has refractive hypermetropia with a near point at 3 m. They are to be prescribed a 

set of glasses that will enable them to have normal close-in vision and the person’s glasses will 

typically sit 2 cm in front of their eyes. (a) What is the maximum optical power of this person’s 

eyes? (b) What is the optical power of the glasses required?

A beam of light is propagating in vacuum and its frequency is constant. Show that 

the average energy carried by it per unit area is proportional to the associated 

electric field vector.

a) A viewing screen is separated from a double-slit source by 2 m. The distance between

the two slits is 0.06 mm. The fifth-order bright fringe is 15 cm from the center line. (a) Determine

the wavelength of the light. (b) Calculate the distance between adjacent bright fringes.

 Another published set of refractive indices for the eye components has ncornea = 1.376, naqueous

= 1.336, nlens = 1.40, nvitreous = 1.337, and the four radii of curvature as (from anterior to posterior) 

7.8, 6.4, 10.1, and 6.1 nm. Calculate what are the focusing power and focal length of this eye when 

the eye is in contact with water.

a gemologist determines the index of refraction of a crystal. if the angle of incidence in air is 50 degrees, the angle of refraction in the crystal is 20 degrees what is the index of refraction of the crystal?