AP (Advanced Placement) Physics(B-C): Questions 818 - 821 of 921

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Question number: 818

» Magnetic Field & Electromagnetism

MCQ▾

Question

The temporary magnets made up of such material, which has:

Choices

Choice (5) Response

a.

High retentivity

b.

Infinity retentivity

c.

Low retentivity

d.

Zero retentivity

e.

All of the above

Question number: 819

» Atomic & Nuclear Physics

MCQ▾

Question

What is the maximum wavelength of light required to produce any current via the photoelectric effect if the anode is made of a material, which has a work function of ?

Choices

Choice (5) Response

a.

b.

c.

d.

e.

Question does not provide sufficient data or is vague

Question number: 820

» Electrostatics

MCQ▾

Question

The electrostatic force between two objects is . Both objects are having equal charge. If the objects are moved three times as far as before, and charge of each object is times as before, then what is the new force?

Choices

Choice (5) Response

a.

b.

c.

d.

e.

None of the above

Question number: 821

» Torque and Equilibrium

MCQ▾

Question

Diagram of hand, which lifts a ball

Diagram of Hand, Which Lifts a Ball

In figure, diagram of hand, which lifts a ball is shown.

As shown in figure, bowling ball is held in a person’s hand with the forearm horizontal. The biceps muscles is attached from the joint, and the ball is from the joint. What is the upward force exerted by the biceps on the forearm?

Choices

Choice (5) Response

a.

b.

c.

d.

e.

All of the above

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