Optics Answers

‏Suppose a laser starting an original field strength Eo bounces back and forth between two mirrors with reflectivity R1 and R2 . The field makes a round trip in a time T = 2L / v , where v is velocity . The electric field will decay with time and the decaying field will be?

A spring with a spring constant of 25 N/m is stretched 65 cm. What was the magnitude of the force used?

10. An object is placed at a distance of 4.5 cm to the left of a convex lens A of focal

length 4 cm.

(a) Find the distance from lens A where a screen should be placed to obtain the image.

(b) The screen is removed and the image is used as an object for a diverging lens B of

focal length 2 cm so that a real image is formed at a distance of 8 cm from lens B.

Find the distance between lens A and lens B.

If the speed of the bob at the lowest point A is 0.84 m/s, what is its KE at this point?

1.A beam of light enters water at an angle of 60 degrees relative to the normal of the water surface . Find the angle of refraction?

2.Light passes from air into water . If the angle of refraction is 20° ,what is the index of refraction of the plastic?

A beam of light enters water at an angle of 60 degrees relative to the normal of the water surface . Find the angle of refraction?

Light passes from air into water . If the angle of refraction is 20° ,what is the index of refraction of the plastic?

The angle of incidence of a light ray on a mirror surface is 35 degrees. What is the angle between the incident and reflected rays?

A beam of light is incident on a plane mirror at an angle of 32 degrees relative to the normal line. What is the angle between reflected rays and the surface mirrors?

How a circularly polarized light can be changed into plane polarized light

In a beauty parlor, a customer sits halfway between two plane mirrors seperately by a distance of 2 m . Each mirror forms a series of images as a result of successive reflections from each mirror. The image formed by one mirror will be the object for the other mirror. Find the distances of the first and second images of the customer formed by each mirror.

In an experiment to measure the effectiveness of a type of gas angles a fraction was found to be 31° in the angle of incidence is 55° calculator refractive index of the class