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.

1,291.
1,292.

Two mirrors of the same length are arranged as shown above, a ray of light NO strikes the system at O and emerges along PQ. The emergent ray has been deviated through

A.

220 degrees

B.

200 degrees

C.

210 degrees

D.

180 degrees

E.

230 degrees

Correct answer is D

No explanation has been provided for this answer.

1,293.

The value of the series resistor required to convert the above galvanometer into a voltmeter with a full range deflection of 15V is

A.

985 ohms

B.

990 ohms

C.

995 ohms

D.

1000 ohms

E.

1005 ohms

Correct answer is C

No explanation has been provided for this answer.

1,294.

A Uniform beam PQ of mass 20kg and length 5m is balanced as shown above, a man of weight 800N stands at M such that QM = 2m. The reaction at P and Q respectively are(take g = 10ms-2)

A.

300N and 500N

B.

420N and 580N

C.

220N and 380N

D.

580N and 420N

E.

382N and 220N

Correct answer is B

No explanation has been provided for this answer.

1,295.

a body is acted upon by forces applied at points P and Q as shown above their resultant is equal to

A.

2√5N in a direction N 56◦ E

B.

2√5N in a direction N 56◦ W

C.

2√13N in a direction N 56◦ E

D.

2√13N in a direction N 56◦ W

E.

√10N in a direction N 56◦ E

Correct answer is C

No explanation has been provided for this answer.