Tube lessons

1)

For reflection of sound the size of reflector must be

small
very small
big
any one of these

2)

Velocity of sound through air at \(0^{o}\)c is

300m/s
312m/s
332m/s
340m/s

3)

If the angle of incidence is \(30^{o}\), after reflection of sound the angle of reflection will be

\(0^{o}\)
\(30^{o}\)
\(60^{o}\)
\(90^{o}\)

4)

If the velocity of sound in the air be 340 m/s the minimum distance between the reflector and listener for hearing the echo of momentary sound should be

17m
34m
68m
340m

5)

If the velocity of sound in the air be 340 m/s the minimum distance between the reflector and listener for hearing the echo of monosyllabic articulate sound should be

17 m
34 m
68 m
340 m

Physics

Nine Standard

Test your understanding of this lesson Reflection of sound:-

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