Optics Answers

The velocity of light in a liquid is 0.80 as fast as it is in air. What is the index of

refraction of the liquid?

an object of height 17.5cm is placed 17.2cm from a diverging lens. what is the angular size of the object?

Write an expression for visibility (v) of interference pattern resulting from two coherent waves assuming (i) their fields to be parallel (ii) their fields to be equal and parallel? v= (I max -I min ) (I max +I min )

1 decibel at 500 nm is 100 W, what is the number of watts at 550 nm?

Given 1 log unit at 500 nm is 100 W, what is the number of watts at 550 nm?

Two very narrow slits are spaced 1.80 mm apart and are placed 35.0 cm from a screen.

What is the distance between the first and second dark lines of the interference pattern when the slits are illuminated with coherent light with wavelength 550 nm?

If the angle of incidence of a ray of light on a plane mirror is 40°, the deviation of the incident ray after reflection is

assuming that the resolving power of the eye is determined by diffraction effects only, calculate the maximum distance at which two objects separated by a distance of 2 m can be resolved by the eye. (assume pupil diameter to be 2 mm and λ = 6000 å.)

why is the sky blue?

describe in physical phenomena

The length of a pin hole camera 10.1 m. How far is an object 1m high placed from the pin hole for the image to be 0.025 m high.