Optics Answers

The radius of the fifth zone of a zone plate is 2 mm. Considering the zone plate as a converging lens, calculate its focal length for light of wavelength 4800 Å

Given that the EM wave has a form of Ex=Eo cos(wt-kz+∅) and it can also be written as Ex=Eo[k(vt-z)+∅] where v=w/k is the velocity.

(a)show that the wave satisfy Maxwell equation

(b)show that v=cuberoot of permeability note,permetivity note permetivity

a number of scientists between the 10th and the 17th centuries (Sahl, Snellius, Descartes) concluded that the following formula should relate the angle of incidence with the angle of refraction. Sini= sinr/n explain?

a number of scientists between the 10th and the 17th centuries (sahl, snellius, descartes) concluded that the following formula should relate the angle of incidence with the angle of refraction. Sini = sinr/n. Explain ?

Find the optical density and transmittance of 0.04% -lactose solution, if ⅛ of 

initial light intensity is absorbed in it.

a number of scientists between the 10th and the 17th centuries (sahl, snellius, descartes) concluded that the following formula should relate the angle of incidence with the angle of refraction. Sini= sinr/n explain?

Ryan Bologna has a lens of unknown focal length which produces an image with an image distance of -5.0 cm.  What is the unknown focal length if the object is 10.0 cm from the lens?  What kind of lens is this?

What is the size of the image produced by the converging lens in Holdin Owt’s camera if the focal length of the lens is 35 mm and the 2.0 m high object is 6.0 m away from the lens?  (Hints: First find the image distance and make sure all distances are expressed in the same units)

1. The film in Seymour Cinema’s movie projector is placed 25.0 cm away from the lens which has a focal length of 20.0 cm.  
2. How far away from the lens is the image on the movie screen?
3. If the film (object) has a height of 5.0 cm, what is the height of the projected image?
4. What is the magnification?

1.  Len DeHand places a converging lens of focal length 5.0 cm, a distance of  3.0 cm from a dime with diameter(height) of 1.8 cm.  Calculate…
2. the image distance;
3. the image diameter;
4. the magnification.  
5. What type of image is this?
6. How is the lens being used?