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.

1,316.

the image above shows an inverted U-tube with the open end, O of one limb below the level, W of water in the tank, in order that water should begin to flow from the tank it is is necessary that

A.

The U-tube is completely filled with water and that P should be higher that W

B.

P should be lower than O and W

C.

P should be lower than W and O should reach the bottom of the table

D.

The U-tube is completely filled with water and that P should be lower that W

Correct answer is B

No explanation has been provided for this answer.

1,317.

PQ is a thin rod on a horizontal table, RS is a plane mirror inclined at \( 45^{\circ}C\) to the horizontal as shown above. The image of PQ as seen in the mirror by the eye T is

A.

horizontal

B.

parallel to the mirror

C.

at infinity

D.

vertical

E.

highly magnified

Correct answer is B

No explanation has been provided for this answer.

1,318.
1,319.

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.

1,320.

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.