# AP (Advanced Placement) Physics(B-C): Questions 648 - 652 of 921

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## Question number: 648

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MCQ▾

### Question

An object is freely fallen from a tall skyscraper from the ground. What is the approximate time taken by the object to hit the ground? (Assume that air resistance is negligible and )

### Choices

Choice (5)Response

a.

b.

c.

d.

e.

All of the above

## Question number: 649

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MCQ▾

### Question

A satellite with a mass is moving in a circular orbit around Earth at height from the surface of the Earth. The mass of the Earth is , and radius of the earth is . Which of the following is correct speed of the satellite in that circular orbit?

### Choices

Choice (5)Response

a.

b.

c.

d.

e.

None of the above

## Question number: 650

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MCQ▾

### Question

A proton enters in a uniform magnetic field of with velocity . What is the force acting on the particle?

### Choices

Choice (5)Response

a.

b.

c.

d.

e.

None of the above

## Question number: 651

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MCQ▾

### Question

Two bodies A and B have masses and , respectively. The distance between A and B is . What is the force of gravity between A and B?

### Choices

Choice (5)Response

a.

b.

c.

d.

e.

Question does not provide sufficient data or is vague

## Question number: 652

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MCQ▾

### Question

A convex lens of focal length in contact with a concave lens of focal length . Which type of lens is made by combination of these two lenses and what is the focal length of combination of these two lenses?

### Choices

Choice (5)Response

a.

Converging lens,

b.

Diverging lens,

c.

Converging lens,

d.

Diverging lens,

e.

None of the above

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