Optics Answers

A student stands at a distance of 1.6 m in front of a camera with focal length of 5 cm, to obtain a sharp image on the film, how far must the lens be from the film?

Calculate the distance of the point in front of the cornea at which parallel light originating inside the reduced eye is focused

Calculate the refractive power of the cornea when it is in contact with water. The index of refraction for water is 1.33

compute the change in the position of the image formed by a lens with a focal length of 1.5cm as the light source is moved from its position at 6m from the lens to infinity

The irradiance of a beam of natural light is 400 W/m². It impinges on the first of two consecutive ideal linear polarizers whose transmission axes are 40.0° apart. How much light emerges from the two?

A car is at a distance 20 m in front of a convex car-mirror having a focal length f = -0.125 m. If the height of the car is 1.45 m, how tall is its image?

h = 0.95 cm

h=1.51 cm

h = 0.76 cm

h = 0.90 cm

h=1.01 cm

A person with refractive myopia can see objects as close as 25 cm clearly, and objects as far away as 3 m clearly. (a) What is the maximum optical power of this person’s eye? (b) What is the minimum optical power of this person’s eye? (c) What is the range of accommodation of this person’s eye?

The distance between an object and its real inverted  imageis 20.0cm. If the magnification is 0.500, what is the focal length of the lens that is being used to form the image?

Sources Of light