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In a slide projector, the slide is illuminated; and lightpassing through the sli

ID: 1754482 • Letter: I

Question

In a slide projector, the slide is illuminated; and lightpassing through the slide then passes through a converging lens offocal length 0.10 m. If a screen is placed 5.0 m from thelens, a sharp image is observed. How far is the slide from thelens?

a. 0.50 m
b. 0.27 m
c. 0.082 m
d. 0.050 m
e. 0.10 m In a slide projector, the slide is illuminated; and lightpassing through the slide then passes through a converging lens offocal length 0.10 m. If a screen is placed 5.0 m from thelens, a sharp image is observed. How far is the slide from thelens? 0.50 m 0.27 m 0.082 m 0.050 m 0.10 m

Explanation / Answer

We know that    1/f = 1/u + 1/v Here f = 0.10 m           v= 5. 0 m           u= ? 1/(0.10 m) = 1/u   + 1/(5.0 m) Find u.