AP (Advanced Placement) Physics(B-C): Questions 584 - 586 of 921

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Question number: 584

» Kinematics in One and Two Dimensions

MCQ▾

Question

An object moving with constant acceleration of . After , its speed becomes . Find the distance covered by object in .

Choices

Choice (5) Response

a.

b.

c.

d.

e.

None of the above

Question number: 585

» Light & Optics

MCQ▾

Question

Which of the following statements must be true for production of laser light?

Choices

Choice (5) Response

a.

Photons excite electrons to a metastable state corresponding to the energy of the ground state.

b.

A population inversion of electrons exists between the metastable states within the atoms.

c.

Electrons in the atom are stimulated to a higher energy state and then move back to the ground state, emitting visible light.

d.

Electrons in a metastable state emit photons of higher energy than the ground state.

e.

None of the above

Question number: 586

» Electrostatics

MCQ▾

Question

Three point charges each carrying charge of , are placed at the Cartesian coordinate system as shown in following figure. Two charges are on x – axis at and , and third charge is at point , which is at . What is the net electric force due to two point charges, which are on axis on point charge placed on ?

Three point charges placed on XY plane

Three Point Charges Placed on XY Plane

In figure three point charges placed on XY plane is shown.

Choices

Choice (5) Response

a.

b.

c.

d.

e.

None of the above

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