AP (Advanced Placement) Physics(B-C): Questions 557 - 559 of 921

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Question number: 557

» Thermodynamics

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MCQ▾

Question

In a machine, an engine receives from a heat reservoir at and rejects to the cold reservoir at . What is the actual efficiency for this engine?

Choices

Choice (5)Response

a.

b.

c.

d.

e.

None of the above

Question number: 558

» Electric Circuits

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Question

Two parallel plate capacitors of different capacitances are charged by same potential difference. The Capacitor 1 stores energy and the capacitor 2 stores energy. What is the ratio of capacitance of capacitor 1 to capacitance of capacitor 2?

Choices

Choice (5)Response

a.

b.

c.

d.

e.

None of the above

Question number: 559

» Light & Optics

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MCQ▾

Question

For total internal reflection to occur at the interface between two different materials, all of the following conditions must be met EXCEPT:

Choices

Choice (5)Response

a.

The incident path of the light must be from a medium with a higher index of refraction to a medium with a lower index of refraction

b.

The incident angle must be the critical angle when the refracted angle is

c.

The critical angle must be equal to , where is the incident medium

d.

The incident angle must be less than the critical angle

e.

Question does not provide sufficient data or is vague

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