Optics Answers

Explain snell law

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.

An aluminum cylinder has a volume of 60 mL. Calculate the buoyant force that will be exerted on the cylinder when it is immersed in alcohol density = 0.78g/mL

A student who is standing 0.5 meters from a plane mirror moves at a velocity of 0.75 

meters per second for 3 seconds away from the mirror. How much further is the student 

from her image than when she first started moving?

What is optics?

Determine the frequency of the fundamental mode and the next two harmonic that can be set up on a sitar string of length 1.0 m. Take the speed of the waves of the string to be 2.8×10^3 m/s

A pump Efis water from a lake to a large tank: 20 m schove the lake. How much work against gravity does the pump do as it transfers 5.0 m² of water to the tank? One cubic meter of water has a mass of 1000 kg.

Tyrone and John are playing tug-of-war against Jamie and Bronn. Timer is pulling with a 9 N of force, John is playing with a 17 N force, Jamie is pulling with a 13 N Of force and brown is pulling with a 8 N of force. Draw free body diagram and determine what the net force is and in what direction it is acting?