AP (Advanced Placement) Physics(B-C): Questions 805 - 808 of 921

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Question number: 805

» Fluids & Solids

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MCQ▾

Question

A tungsten wire of radius and Young’s modulus is permute strain not exceed . What is the maximum load applied on this wire?

Choices

Choice (5)Response

a.

b.

c.

d.

e.

None of the above

Question number: 806

» Thermodynamics

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MCQ▾

Question

One mole of an ideal gas enclosed in a cylinder of conducting walls. Let and be initial pressure, volume and temperature. Let gas expand to volume where pressure reduces to and temperature remains constant. How much work is done during this expansion?

Choices

Choice (5)Response

a.

b.

c.

d.

e.

All of the above

Question number: 807

» Atomic & Nuclear Physics

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MCQ▾

Question

The radioactive element radium has a half-life of days. Which of the following statements is true regarding one nucleus of radium after days in terms of probability?

Choices

Choice (5)Response

a.

The nucleus will decay only when a second nucleus is brought into contact with it.

b.

There is a chance the nucleus will have decayed.

c.

Half of the nucleus has decayed.

d.

The nucleus won’t decay prior to days, but should decay after that time.

e.

All of the above

Question number: 808

» Light & Optics

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MCQ▾

Question

As a ray of light moves from a medium with a lower index of refraction into a medium with a higher index of refraction,

Choices

Choice (5)Response

a.

Speed and wavelength decrease, while frequency remains the same

b.

Speed decreases, while frequency and wavelength remain the same

c.

Speed and wavelength increase, while frequency remains the same

d.

Speed and frequency decrease, while wavelength remains the same

e.

None of the above

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