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.

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2,241.

Two mirrors are inclined as shown in the diagram. A ray of light RO strikes the arrangement at O and emerges along PO. The emergent ray has been deviated through

240^o

180^o

120^o

60^o

30^o

View answer & explanation

Correct answer is B

No explanation has been provided for this answer.

2,242.

The graph above shows the expansion of water as the temperature increases from 0°C. Which of the following deductions from the graph are true?

i. Water has its maximum density at Q.
ii. The volume of water is greater at 0°C than at 4°C.
iii. The volume of water decreases uniformly when cooled from 100°C.
iv. When water solidifies, its volume increases

i and ii only

i and iii only

ii and iii only

i, ii and iii only

i, ii and iv only

View answer & explanation

Correct answer is E

No explanation has been provided for this answer.

2,243.

Two forces, whose resultant is 100N are perpendicular to each other. If one of them makes an angle of 60^o with the resultant, calculate the magnitude. (Sin 60^o = 0.8660, Cos 60^o = 0.500)

200.0N

173.2N