Optics Answers

An object is placed between a converging

lens and a plane mirror. Explain how two real images of the object may be

produced by the system. If the focal length of the lens is 15 cm and the object is 20 cm from both the lens and the mirror. Calculate the distances of the two images from the lens.

A pencil that is 10.0 cm long is held perpendicular to the surface of a plane mirror with the tip of the pencil lead 12.0 cm from the mirror surface and the end of the eraser 21.0 cm from the mirror surface what is the length of the end of the image of the pencil that is formed by the mirror which end of the image is closer to the mirror surface: the tip of the lead or the end of the eraser?

An object is placed 10 cm infront of a diverging lens of focal length 11cm. where is the image located?Is the image real or virtual? What is the magnification?

1. A concave mirror has a 7.0 cm focal length.  A 2.4 cm object is 16.0 cm from the mirror.  Determine the image height.

Light traveling in glass n=3/2 is incident on-air n=1. What is the angle of incidence that causes the light to experience total internal reflection?

An object is placed at a distance of 4.5 cm to the left of a convex lens A of focal length 4 cm . The screen is removed and the image is used as an object for diverging lens B of focal length 2 cm so that a real image is formed at a distance of 8 cm from lensB .

Find distance between lens A and lens B.

Determine if the formula T=2π√(m/f/x ) is dimensionally correct

Light travels through an optical fiber (n=1.44) until it reaches the fiber's end and emerges into air. What is the angle of refraction outside the fiber if the angle of incidence on the end of the fiber is 25 degrees?

Light travels through an optical fiber (n=1.44) until it reaches the fiber's end and emerges into air. What is the angle of refraction outside the fiber if the angle of incidence on the end of the fiber is 25 degrees?

Light that is nonpolarized has an intensity of 6.0 W/m^2. Rays of this light are incident on two polarizing elements whose transmission axes are at an angle of 45°. What is the intensity of light emerging from the second film?

a. Given:

b. Formula:

c. Solution:

d. Final answer with unit: