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.

1,356.

In a radioactive series

\( ^{235} _{92}L \to ^{235} _{92}M \to ^{231} _{90}N \to ^{231} _{91}\phi \)

The particles emitted are respectively

A.

\( \beta , \beta , \alpha \)

B.

\( \alpha , \gamma , \beta \)

C.

\( \gamma , \alpha , \beta \)

D.

\( \alpha , \alpha , \beta \)

E.

\( \beta , \alpha , \beta \)

Correct answer is C

No explanation has been provided for this answer.

1,357.

Which of the following may be used to determine the relative humidity in a physics laboratory

I. Manometer
II. Wet-and-Dry Bulb Hygrometer
III. Hair Hygrometer
IV. A Hydrometer

A.

I Only

B.

II and III Only

C.

II Only

D.

III Only

E.

II,III and IV Only

Correct answer is B

No explanation has been provided for this answer.

1,358.

A simple pendulum, 0.6m long, has a period of 1.5s. What is the period of a similar pendulum of 0.4m length in the same location?

A.

\( 1.5 \frac{ \sqrt{2}}{3} \)s

B.

\( 1.5 \frac{ \sqrt{3}}{2} \)s

C.

2.25s

D.

1.00s

E.

2.00s

Correct answer is A

No explanation has been provided for this answer.

1,360.

The function of a 5-A fuse included in a circuit supplying a household refrigerator with power is to keep the

A.

Temperature of the refrigerator low and constant

B.

keep current supplied to the refrigerator below 5A

C.

Voltage supply constant

D.

Current supplies to the refrigeration

Correct answer is B

No explanation has been provided for this answer.