Optics Answers

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?

screen is separate from double slit source at 2.5 m the distance between the two slits is 0.05mm the second order bright fringe (m=5)is 9.5cm from the center line .(a) determine the wavelength of the light.(b) calculate the distance between adjaseet bright fringe

screen is separate from double slit source at 2 m the distance between the two slits is 0.05mm the second order bright fringe (m=5)is 8.5cm from the center line .(a) determine the wavelength of the light.(b) calculate the distance between adjaseet bright fringe

Explain the term coherence in respect to light. Given that ∆𝒍 = 𝝀/𝝀2 explain 

what each symbol represent.

An object 4 cm high is placed 30 cm in front of the condenser lens. The focal length of this lens is 10 cm. a) Determine the position, height and orientation of the image. b) Suppose that you only now place a second, also converging lens to the right of the first lens at a distance of 20 cm from the first. Determine the focal length of the second lens if the image given by this two-lens system is formed 13.3 cm to the right of the first lens. The mentioned final image is inverted in relation to the original object. (Answer: a) di = 15 cm, m = -0.5, hi = -2 cm b) f₂ = 19.7 cm) I solved for a) but I don't know how to do under b).