Part A) You are looking at an image projected on a screen (projected using a len

Question

Part A) You are looking at an image projected on a screen (projected using a lens). If you move the screen closer to the lens you observe that:

A) the image doesn't change
B) the image gets smaller
C) the image gets larger
D) the image blurs
E) the image becomes dimmer
F) the image becomes brighter

Part B) Which statement below best describes the focal point for lenses?

A) for converging lens: all rays entering the lens parallel to the optical axis converge at the focal point; for diverging lens: all rays entering the lens parallel to the optical axis diverge from the focal point.
B) all rays coming into the lens converge at the focal point for any lens
C) all rays entering the lens parallel to the optical axis converge at the focal point for any lens
D) for diverging lens: all rays entering the lens parallel to the optical axis converge at the focal point; for converging lens: all rays entering the lens parallel to the optical axis diverge from the focal point.

Part C: A magnifying glass is:

A) A converging lens with the object inside the focal point
B) A diverging lens with the object inside the focal point
C) A diverging lens with the object anywhere
D) A diverging lens with the object outside the focal point
E) A converging lens with the object anywhere
F) A converging lens with the object outside the focal point

Explanation / Answer

A) D)the image blurs

B) A)

C) A) A converging lens with the object inside the focal point

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