Question 3 1 pts If you wanted to decrease the focal length (f) of a lens....
If the refractive power of this lens was DECREASED, would the focal length for the lens increase or decrease? Explain your answer. 2. If the refractive power of this lens was DECREASED, would the focal length for the lens increase or decrease? Explain your answer. (2 pts) Question 1 4 pts Answer BOTH parts of this question 1. If light passing through a convex lens reaches its focal point 12.5 cm from the lens, what is the refractive power of...
Question 1 Find the focal length of the lens of the figure 2 m n=1.58 3 m - 10.34 m O a. 12 cm b. 10.34 m Ос. O d. -0.0967 m
1.You use a CONVEX lens of focal length f= 5 cm to concentrate the rays of the sun to set fire to (an unfortunate) leaf a) Draw a picture of the rays through the lens b) Label the OBJECT DISTANCE (o), IMAGE DISTANCE (i), and determine their NUMERICAL VALUES (with UNITS of course). (HINT: use 1/o + 1/1-1/f.)
Question 6 10 pts A camera with a 50.0 mm focal length lens is being used to photograph a person standing 3.3 m away. How far from the lens must the film be? You need to express your answer in cm, do not include unit. Your answer should be a number with two decimal places.
You need to make a plano-concave lens with a focal length of +15 cm out of glass with an index of 1.60. Plano-concave means that one side is flat. You then form an image with the lens of an object that is 1 cm tall and that is 25 cm from the lens. (a) Find the radius of curvature of the curved side of the lens. (b) How far is the image formed from the lens? (e) How big is...
6) 15 pts. Using a ruler and lens equation determine the focal length of the lens. Show all work and indicate where you made your measurements. Light source is on the left ight-▲ ource c) 5 pts. What do think would happen to the location of the image above, if a diverging lens were put between the lens and the image. Draw the negative lens (in place) above. Explain your answer.
Questions +62 mm Lens Does a strong lens (high power) have a long or short focal length? What are the power and focal length of a thin, flat piece of glass with no curvature? Look carefully at the +62 mm and +400 mm lenses. Which lens has the greater curvature? 1. 120 mim Lens 2. To correct hypermetropia, is it necessary to move the image formed by the eye closer to or farther from the eye's lens system? Does this...
Question 13 5 pts A slide projector uses a thin lens with a focal length 132mm to project a clear image on a screen located 10.5 m from the lens. Calculate the distance the slide is from the lens and the magnification obtained. O O 513 mm, m = -20.5 134 mm, m=-78.4 154 mm, m=-54.9 O 513 mm, m = 20.5 O 585 mm, m = -17.9
Question 13 5 pts A slide projector uses a thin lens with a focal length 132 mm to project a clear image on a screen located 10.5 m from the lens. Calculate the distance the slide is from the lens and the magnification obtained. O 513 mm,m --20.5 O 134 mm, m --78.4 O 154 mm, m =-54.9 O 513 mm, m - 20.5 O 585 mm, m = -17.9
Question 13 5 pts A slide projector uses a thin lens with a focal length 132 mm to project a clear image on a screen located 10.5 m from the lens. Calculate the distance the slide is from the lens and the magnification obtained. 513 mm, m = -20.5 O 134 mm, m = -78.4 154 mm, m =-54.9 O 513 mm, m = 20.5 O 585 mm, m = -17.9