Optics Answers

 What is the focal length of a convex mirror which produces an image that appears 15.0 cm behind the mirror when the object is 27.5 cm from the mirror?

force of 16 N acts tangent to the edge of a solid cylinder weighing 18 N and which has a

diameter of 76 cm. Determine the kinetic energy of the cylinder after 15 s.

The word ESUT is printed on a sheet of cardboard which is held in front of plane mirror.describe the image seen in the mirror

An erect image,four times the size of the object is obtained with a concave mirror of radius of curvature 48cm. What is the position of the objects

Show that the radius of curvature of a mirror is twice the focal length

The image of an object in a convex mirror is 4cm from the mirror. If the mirror has a radius of curvature of 24cm,find the position of the object and the magnification

An object is 0.25 m from a concave mirror with a focal length of 0.6 m the object is 0.38 m talk.

A blue laser beam with a wavelength of 450nm illuminates 2 narrow slits each with a width of 0.5micrometers. The opaque strip separating the strips is 15 micrometers wide. The interference pattern is observed on a screen 85cm away.

1. [2] Relative to the optical axis through the center of the slits, at what angle in radians does the 1st interference minima occur?

2. [2] How far from the axis is this (in cm)?

3. [2] At what angle does the 3rd interference maxima (m=3) occur?

4. [2] How far from the axis is this (in cm)?

5. [4] Sketch the pattern (as a function of angle) from 3 maxima below to 3 maxima above the axis.

formula for total gain in db and its absolute value for a signal passing through four cascaded amplifiers

An object of height 10 cm is placed at a distance of 40 cm, infront of a concave mirror of focal length 20 cm Find

th length of image.