Physics Ray Optics Level: High School
A small insect viewed through a convex lens is 2.3 cm from the lens and appears twice its actual size .Part A):What is the focal length of the lens?
Express your answer using two significant figures . f= cm
Physics Ray Optics Level: High School
A lens for a 41 mm camera has a focal length given by f = 53 mm .Part A): How close to the film should the lens be placed to form a sharp image of an object that is 4.2 m away?
Express your answer using two significant figures. di= mm
Part B): What is the magnification of the image on the film?
Express your answer using two significant figures. m=?
Physics Ray Optics Level: High School
When an object is located 43 cm to the left of a lens, the image is formed 26 cm to the right of the lens .What is the focal length of the lens?
Express your answer using two significant figures .
f= cm
Physics Ray Optics Level: High School
A concave lens has a focal length of -36 cm . Find the image distance and magnification that results when an object is placed 28 cm in front of the lens .Part (A)Express your answer using two significant figures .
di= cm
Part (B) Express your answer using two significant figures . m=?
Physics Ray Optics Level: High School
A coin is lying at the bottom of a pool of water that is 7.3 feet deep .Viewed from directly above the coin , how far below the surface of the water does the coin appear to be ? (The coin is assumed to be small in diameter ; therefore , we can use the small angle approximations sinć ~ tanć ~theta .)
Express your answer using two significant figures.
dapp = ft
Physics Ray Optics Level: High School
The angle of refraction of a ray of light traveling through an ice cube is 30 degrees . Suppose the ice melts , but the angle of refraction remains the same .Part A) Is the corresponding angle of incidence greater than , less than , or the same as it was for ice ? Why?
Part B) Calculate the angle of incidence for part A . theta i= degrees
Physics Ray Optics Level: High School
The angle of refraction of a ray of light traveling through an ice cube is 30 degrees .Express your answer using two significant figures .
Find the angle of incidence
ći= degrees
Physics Ray Optics Level: High School
The virtual image produced by a convex mirror is one-quarter the size of the object .Part A) If the object is 40 cm in front of the mirror , what is the image distance ?
Express your answer using two significant figures . di=?cm
Part B) What is the focal length of this mirror? Express your answer using two significant figures . f=?cm
Physics Ray Optics Level: High School
A magician wishes to create the illusion of a 3.56m tall elephant . He plans to do this by forming a virtual image of a 52.0 cm tall model elephant with the help of a spherical mirror .A) Should the mirror be concave or convex? Why
B) If the model must be placed 3.15 m from the mirror, what radius of curvature is needed? R=?
C) How far from the mirror will the image be formed
di= ?m
Physics Ray Optics Level: High School
Yellow bright light travels through a glass block at 1.95 x 10^11 m/s . Its wavelength in the glass is 3.81 x 10^-7 m . What is the frequency of the yellow bright light ?
Physics Ray Optics Level: High School
Wave Optics
Assuming that I is the wavelength of light in oil , for an oil film on water , constructive interference occurs with the minimum film thickness of :I/4
I/2
I
2I
Physics Ray Optics Level: High School
Ray Optics
Gaussian pulses at a wavelength of 1310 nm traveling through a dispersive media of length L = 5km are each broadened by 5 nanoseconds . What is the maximum data rate than can be transmitted through this material for such pulses ? (state any assumptions)
Physics Ray Optics Level: High School
Ray Optics
The near-field distribution at the facet of an InGaAsP semiconductor laser is modeled as a Gaussian distribution with wo = 3 micro m perpendicular to the junction and wo = 6 micro m parallel to the junction . The free space wavelength of the semiconductor laser is 1400 nm . Estimate the far-field beam divergence(i) perpendicular
(ii) parallel to the junction of the laser
Physics Ray Optics Level: High School
Ray Optics
A fiber has an optical loss of 0.2 dB/km . What is the optical loss of a 50 km length of this fiber in units of dBs? If 1 mW of optical power at a wavelength of 1 = 1550 nm is coupled into this fiber , what will the output power be after 100 km ?
Physics Ray Optics Level: High School
Ray Optics
Consider a symmetric slab waveguide (or a circular step-index fiber waveguide) . If all parameters are held constant except the index of refraction difference between the core and the cladding increase , will the fraction of the energy (of the fundamental propagating mode ) in the cladding regions increase , decrease , or remain the same ? Explain in detail ?