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JAMB Physics Past Questions & Answers - Page 341

1,701.

If a sonometer has a fundamental frequency of 450HZ, what is the frequency of the fifth overtone?

2700Hz

456Hz

444Hz

75Hz

View answer & explanation

Correct answer is A

5^th Overtone = 6f_o = 6 x 450 = 2700Hz

1,702.

What is the velocity of sound at 100 ^oC if the velocity of sound at 0 ^oC is 340ms ^-1?

497m^-1

440m^-1

397m^-1

240m^-1

View answer & explanation

Correct answer is C

$V \propto \sqrt{T}$

⇒ $\frac{V_{1}}{\sqrt{T_{1}}} = \frac{V_{2}}{\sqrt{T_{2}}}$

Using the above formula, we get

$V_{2} \approxeq 397ms^{-1}$

1,703.

A transverse wave and a longitudinal wave travelling in the same direction in a medium differ essentially in their

frequency

amplitude

direction of vibration of the particles of the medium

period of vibration of the particles of the medium

View answer & explanation

Correct answer is C

No explanation has been provided for this answer.

1,704.

A wave that travels through stretched strings is known as

electromagnetic wave

micro wave

mechanical wave

seismic wave

View answer & explanation

Correct answer is C

No explanation has been provided for this answer.

1,705.

The mechanism of heat transfer from one point to another through the vibration of the molecules of the medium is

covection

conduction

radiation

diffusion

View answer & explanation

Correct answer is B

No explanation has been provided for this answer.

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