Student Login

Home›Chapters›Wave Motion PYQs›Stationary Waves & Vibrating Strings›Question 101

NEET 2014 (AIPMT) · Stationary Waves & Vibrating Strings

Stationary Waves & Vibrating Strings question from NEET 2014 (AIPMT)

Q101NEET 2014 · AIPMTEasy

Stationary Waves & Vibrating Strings

If n1, n2 and n3 are the fundamental frequencies of three segments into which a string is divided, then the original fundamental frequency n of the string is given by

Show answer and solution

Answer: (a)

Same tension and $\mu$ : $n \propto \dfrac{1}{l}$ , so $l = \dfrac{k}{n}$ .
$l = l_1 + l_2 + l_3 \Rightarrow \dfrac{1}{n} = \dfrac{1}{n_1} + \dfrac{1}{n_2} + \dfrac{1}{n_3}$ .
So the answer is (a).

Report a mistake

More questions on Stationary Waves & Vibrating Strings

The total length of a sonometer wire between fixed ends is 110 cm. Two bridges are placed…JEE Main 2014 (19 Apr, Shift 1)
The length of the wire between two ends of a sonometer is 100 cm. What should be the…NEET 2013
A sonometer wire of length 114 cm is fixed at both the ends. Where should the two bridges…JEE Main 2013 (23 Apr, Shift 1)
A sonometer wire of length 1.5 m is made of steel. The tension in it produces an elastic…JEE Main 2013
When a string is divided into three segments of length l 1, l 2 and l 3 the fundamental…NEET 2012 (AIPMT, Prelims)
A string is stretched between fixed points separated by 75.0 cm. It is observed to have…JEE Main 2006 (AIEEE)
A metal wire of linear mass density of 9.8 g/m is stretched with a tension of 10 kg-wt…JEE Main 2003 (AIEEE)
length of a string tied to two rigid supports is 40 cm. Maximum length (wavelength in cm)…JEE Main 2002 (AIEEE)