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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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1,456.

An ammeter can be adapted to measure potential difference by using a

shunt

multiplier

rheostat

resistance box

View answer & explanation

Correct answer is B

No explanation has been provided for this answer.

1,457.

An object is placed in front of two plane mirrors inclined at 60^o to each other. Determine the number of the images formed

View answer & explanation

Correct answer is C

n = $\frac{360}{\theta}$ - 1

= $\frac{360}{60} -1$

= 6 - 1 = 5

1,458.

An observer hears an echo 1.26 seconds after blowing a whistle near a cliff. calculate the distance of the observer from the cliff. [speed of sound in air = 330ms^-1]

104.4m

207.9m

415.8m

523.8m

View answer & explanation

Correct answer is B

S = $\frac{vt}{2} = \frac{330 \times 1.26}{2} = 207.9$

1,459.

A fish inside a pond appears to be at a depth of 1.5m when viewed vertically from above. The refractive index of the water in the pound is 1.3. Calculate the apparent displacement of the fish

2.50m

1.95m

1.50m

0.45m

View answer & explanation

Correct answer is D

Real depth = n x apparent depth

= 1.3 x 1.5 = 1.95m

Apparent displacement = 1.95 - 1.5 = 0.45m

1,460.

The diagram above illustrates an electromagnetic wave travelling with speed 3.0 x 10⁸ms^-1. Calculate the wave length of the wave

0.05m

0.15m

0.16m

0.40m

View answer & explanation

Correct answer is C

No explanation has been provided for this answer.

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