PHYSICS 1260 EXAM 3 - ANSWERS (GRADED A) Question: Most Of The Waves ...

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PHYSICS 1260 EXAM 3

CONCEPTUAL QUESTIONS AND

ANSWERS (GRADED A)

Question: Most Of The Waves In The Electromagnetic

Spectrum Are

• Red Light.
• Blue Light.
• Green Light.
• Invisible.

Correct Answer: D) invisible.

Question: Light Travels From One Place To Another

Along A Path Of Least

• Distance.
• Time.
• Effort.
• Expense.

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• Complication.

Correct Answer: B) time.

Question: When A Pulse Of White Light Is Incident On A

Glass Prism, The First Color To Emerge Is

• Red.
• Orange.
• Green.
• Violet.

Correct Answer: A) red.

Question: The Index Of Refraction For Crown Glass,

Common In Eyeglasses, Is 1.52. The Index Of Refraction For A Particular Plastic Lens Is 1.76. Light Bends More In The

• Crown Glass.
• Plastic Lens.
• Same In Each.
• Need For Information.

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Correct Answer: B) plastic lens.

Question: The Image Of The "Infinitely-Far-Away" Sun

Produced By A Converging Lens Appears

• Between The Lens And The Focal Point.
• At The Focal Point.
• Beyond The Focal Point.

Correct Answer: B) at the focal point.

Question: A "Pinhole Camera" Has No Lens. The Tiny

Pinhole Opening Ensures That Rays Of Light From Different Parts Of An Object

• Overlap.
• Don't Overlap.
• Bend To A Focus.

Correct Answer: B) don't overlap.

Question: In A Converging Lens, Objects Infinitely Far

Away Are Focused

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• In Front Of The Focal Point.
• At The Focal Point.
• Beyond The Focal Point.

Correct Answer: B) at the focal point.

Question: When Taking A Photo Of A Nearby Flower,

Your Camera Lens Should Be Set

• Closer Than One Focal Length From The

Photosensitive Surface.

• Farther Than One Focal Length From The

Photosensitive Surface.

• To One Focal Length From The Photosensitive

Surface.

Correct Answer: B) farther than one focal length from

the photosensitive surface.

Question: Which Of The Following Can Be Projected

Onto A Viewing Screen?

• Real Image.
• Virtual Image.