1
NEET 2022 Phase 1
MCQ (Single Correct Answer)
+4
-1

If the initial tension on a stretched string is doubled, then the ratio of the initial and final speeds of a transverse wave along the string is

A
1 : 1
B
$$\sqrt2$$ : 1
C
1 : $$\sqrt2$$
D
1 : 2
2
NEET 2020 Phase 1
MCQ (Single Correct Answer)
+4
-1
In a guitar, two strings A and B made of same material are slightly out of tune and produce beats of frequency 6 Hz. When tension in B is slightly decreased, the beat frequency of A is 530 Hz, the original freqnency of B will be :
A
524 Hz
B
536 Hz
C
537 Hz
D
523 Hz
3
NEET 2018
MCQ (Single Correct Answer)
+4
-1
The fundamental frequency in an open organ pipe is equal to the third harmonic of a closed organ pipe. If the length of the closed organ pipe is 20 cm, the length of the open organ pipe is
A
13.2 cm
B
8 cm
C
12.5 cm
D
16 cm
4
NEET 2018
MCQ (Single Correct Answer)
+4
-1
A tuning fork is used to produce resonance in a glass tube. The length of the air column in this tube can be adjusted by a variable piston. At room temperature of 27°C two successive resonances are produced at 20 cm and 73 cm of column length. If the frequency of the tuning fork is 320 Hz, the velocity of sound in air at 27°C is
A
330 m s–1
B
339 m s–1
C
350 m s–1
D
300 m s–1
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