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.

237.

A student wishes to measure the potential difference across a resistor,R. She has a galvanometer,G and some connecting wires.

What else does she need?

A.

high value resistor connected in parallel with G

B.

low value resistor connected in parallel with G low value

C.

resistor connected in series with G

D.

high value resistor connected in series with G.

Correct answer is D

No explanation has been provided for this answer.

238.

The acceleration of a moving object can be determined from the? 

A.

slope of its distance-time graph

B.

area under its distance-time graph

C.

slope of its velocity-time graph

D.

area under its velocity-time graph

Correct answer is C

No explanation has been provided for this answer.

239.

A metallic sphere is heated from 27°C to 200°C Without change of state. Which of the following  changes would have resulted from the heating?

 

A.

No changes occur in its volume and density

B.

Its volume increases and its density increases

C.

Its volume increases and its density decrease

D.

Its volume increases without a change in density

Correct answer is C

No explanation has been provided for this answer.