Physics questions and answers

Physics Questions and Answers

If you want to learn more about the nature and properties of matter and energy or you're simply preparing for a Physics exam, these Physics past questions and answers are ideal for you.

851.

A body is projected with an initial velocity U at an angle O to the horizontal. The time taken by it to reach its maximum height is given by the expression

A.

\(\frac{2u \text{sin}\theta}{g}\)

B.

\(\frac{u^2 \text{sin}^2\theta}{2g}\)

C.

\(\frac{u \text{sin}\theta}{g}\)

D.

\(\frac{u \text{sin}\theta}{2g}\)

Correct answer is C

No explanation has been provided for this answer.

852.

The slope of a straight-line velocity-time graph represents

A.

uniform acceleration

B.

uniform speed

C.

total distance travelled

D.

workdone

Correct answer is A

No explanation has been provided for this answer.

853.

The resultant force in a couple is

A.

zero

B.

infinite

C.

the sum of the forces

D.

the product of the forces

Correct answer is A

No explanation has been provided for this answer.

854.

An object floats in a fluid when it displaces it's

A.

volume of liquid in which it floats

B.

mass of fluid in which it foats

C.

weight of fluid in which it floats

D.

density of fluid in which it floats

Correct answer is C

A floating object displaces a weight of fluid equal to its own weigh