# Optics

#### Optics

An observer looking across a swimming pool at point C views a light ray
An observer looking across a swimming pool at point C views a light ray coming from a point A on the opposition side of the pool at the bottom. The ray leaves the water at a point 1.7 mete from oppos...

Light of intensity 50 Wm2 is incident on a glass windowpane
Light of inteity 50 W/m2 is incident on a glass windowpane (n = 1.5), with rays approximately perpendicular to the surface, as show in figure below. Find the inteity I1, I2, and I3....

Light passes from air to another medium
Light passes from air to another medium at point A. How long does it take the light ray to travel from A to B? Using the geometry we can find refract...

A light ray is incident on a glass plate at an angle of 40 degrees
A light ray is incident on a glass plate at an angle of 40° as shown in the figure. a) Find angles Α, Β, and Γ? b) Will any of the light striking the side of the glass plate at...

Convergence lens focal length and power
Below diagram shows a sketch of the le with the surface labeled in reference to their curvature as seen from the left side, assume to be the side of the incident light. The le is made out of gla...

Convergence lens with different radii
A certain thin le made from glass has surfaces with radii R1 = +10cm and R2= +8cm. a) Sketch the le? b) Find the focal length? c) Image distance for an object distance at 15cm?...

Two lens system – Image distance and magnification
Two converging lees, with the focal length f1 = 10 cm and f2 = 15 cm are placed 40 cm apart, as shown on the figure. An object is placed 60 cm in front of the fit le as show in second figure....