A simple project consists of an LCD screen and a single positive lens. a)What focal length...

Question

Question

A simple project consists of an LCD screen and a single positive lens.

a)What focal length lens do you need to put a 2m high image of a 10cm LCD on a screen 4 m away?

b)How far will this lens need to move to change the focus to screen 5m away? What will be the image size?

For a), the answer is 0.190m. Please show all your work, thank you!

Answer 1

Answer #1

4m c3 4 2 b) LA 14-S So, lens has to be woued toward reen

Answer 2

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