Waves Test

Result

Waves Test - 62

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
4 / -1

An air column in a pipe, which is closed at one end, will be in resonance with a vibrating body of frequency 166 Hz, if the length of the air column is

A
2.00 m

B
1.50 m

C
1.00 m

D
0.50 m

Solution
Question 2
4 / -1

The fundamental note produced by a closed organ pipe is of frequency f. The fundamental note produced by an open organ pipe of same length will be of frequency

A
f/2

B
f

C
2f

D
4f

Solution
Question 3
4 / -1

If the velocity of sound in air is 336 m/s. The maximum length of a closed pipe that would produce a just audible sound will be

A
3.2 cm

B
4.2 m

C
4.2 cm

D
3.2 m

Solution
Question 4
4 / -1

A pipe 30 cm long is open at both ends. Which harmonic mode of the pipe is resonantly excited by a 1.1 kHz source? (Take speed of sound in air = 330 ms^–1)

A
First

B
Second

C
Third

D
Fourth

Solution
Question 5
4 / -1

A source of sound placed at the open end of a resonance column sends an acoustic wave of pressure amplitude ρ₀ inside the tube. If the atmospheric pressure is ρ_A, then the ratio of maximum and minimum pressure at the closed end of the tube will be

A

B

C

D

Solution
Question 6
4 / -1

Two closed pipes produce 10 beats per second when emitting their fundamental nodes. If their lengths are in ratio of 25 : 26. Then their fundamental frequency in Hz, are

A
270, 280

B
260, 270

C
260, 250

D
260, 280

Solution
Question 7
4 / -1

An open pipe resonates with a tuning fork of frequency 500 Hz. it is observed that two successive nodes are formed at distances 16 and 46 cm from the open end. The speed of sound in air in the pipe is

A
230 m/s

B
300 m/s

C
320 m/s

D
360 m/s

Solution
Question 8
4 / -1

If v is the speed of sound in air then the shortest length of the closed pipe which resonates to a frequency n

A

B

C

D

Solution
Question 9
4 / -1

Standing stationary waves can be obtained in an air column even if the interfering waves are

A
Of different pitches

B
Of different amplitudes

C
Of different qualities

D
Moving with different velocities
Question 10
4 / -1

The stationary wave y = 2a sin kx cos ωt in a closed organ pipe is the result of the superposition of y = a sin (ωt – kx) and

A
y = – a cos (ωt + kx)

B
y = – a sin (ωt + kx)

C
y = a sin (ωt + kx)

D
y = a cos (ωt + kx)

Solution