Optics Answers

State the two major categories of fiber–fiber joint, indicating the differences between them. Briefly discuss the problem of Fresnel reflection at all types of optical fiber joint, and indicate how it may be avoided. A silica multimode step index fiber has a core refractive index of 1.46. Determine the optical loss in decibels due to Fresnel reflection at a fiber joint with: (a) a small air gap; (b) an index-matching epoxy which has a refractive index of 1.40. It may be assumed that the fiber axes and end faces are perfectly aligned at the join

Write a report or information about optical resonators.

An object is placed in front of a covering lens with a focal length of 17.50 CM. Find the image distance for an object distance of 35.00 cm. Answer in units of cm.

A soap film of refractive index 1.43is illuminated by white light incident at an angle 300. The refracted light is examined by a spectroscope in which dark band corresponding to wavelength 6х10-7m is observed. Calculate the thickness of the film.

a) The mathematical expression for one dimensional wave travelling along the

positive x-direction is given as

y(x,t )  0.02 sin (42 x 1886t )m

where x is in meters and t is in seconds. Determine the direction of propagation of

the wave and calculate its amplitude, wavelength, frequency and velocity.

A viewing screen is separate from double slit source by 1.2m the distance between the two slits is 0.03mm the second order bright fringe (m=2)is 4.5cm from the center line .(a) determine the wavelength of the light.(b) calculate the distance between adjaseet bright fringe

A ray of light in air (n=1.00) strikes a block of quartz at an angle of incidence of 30o. The angle of refraction of refraction is 20o. What is the index of refraction of the quartz?

A merry-go-round is initially at rest. On being given a constant angular acceleration it reaches an angular speed of 1srad50.0in 10.0 s. At t=10.0 s, determine the magnitude of: (i) the angular acceleration of the merry-go-round ; (ii) the linear velocity of a child sitting on the merry-go-round at a distance of3.0 m from its centre; (iii) the tangential acceleration of the child; (iv) the centripetal acceleration of the child; and (v) the netacceleration of the child.

A viewing screen is separate from double slit source by 1.2m the distance between the two slits is 0.03mm the second order bright fringe (m=2)is 4.5cm from the center line .(a) determine the wavelength of the light.(b) calculate the distance between adjaseet bright fringe

A viewing screen is separate from double slit source by 1.2m the distance between the two slits is 0.03mm the second order bright fringe (m=2)is 4.5cm from the center line .(a) determine the wavelength of the light.(b) calculate the distance between adjaseet bright fringe