7. A 3.0cm tall object is located 25.0cm from a converging lens that has a focal

Question

7. A 3.0cm tall object is located 25.0cm from a converging lens that has a focal length of 10.0cm. Where is the image located and what type of image is it?

8. A 3.0cm tall object is located 5.0cm from a converging lens that has a focal length of 10.0cm. Where is the image located and what type of image is it?

9. A 3.0cm tall object is located 5.0cm from a diverging lens that has a focal length of 10.0cm. Where is the image located and what type of image is it?

a On the same side as the object, 16.7 cm from the lens. Real and Upright b On the opposite side as the object, 16.7 cm from the lens. Virtual and Upright c On the same side as the object, 16.7 cm from the lens. Real and Inverted d On the opposite side as the object, 16.7 cm from the lens. Virtual and Inverted e On the opposite side as the object, 16.7 cm from the lens. Real and Inverted

Explanation / Answer

1/p + 1/q = 1/f

1/q = 1/10 - 1/25

q = 16.7 cm

m = -q/p =-16.7/25 = -0.668

c) On the same side as the object, 16.7 cm from the lens. Real and Inverted

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1/p + 1/q = 1/f

1/q = 1/10 - 1/5

q = -10 cm

e) On the opposite side as the object, 10.0 cm from the lens. Virtual and Upright

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