EASY
11th ICSE
IMPORTANT
Earn 100

The frequency of a sonometer wire is 100 Hz. On doubling the length of the wire and changing tension, the frequency become 75 Hz. Determine the ratio of the initial and final tensions.

Important Questions on Vibrations of Stretched Strings

HARD
11th ICSE
IMPORTANT
ISC Physics Class XI Part 1>Chapter 32 - Vibrations of Stretched Strings>NUMERICALS>Q 21
The ratio of frequencies of two wires having same length and same tension and made of the same material is 2:3. If the diameter of one wire be 0.09 cm, then determine the diameter of the other.
MEDIUM
11th ICSE
IMPORTANT
ISC Physics Class XI Part 1>Chapter 32 - Vibrations of Stretched Strings>NUMERICALS>Q 22
Two forks A and B when sounded together produce 4 beats/second. The fork A is in unison with 30 cm length of a sonometer wire and B is in unison with 25 cm length of the same wire at the same tension. Calculate the frequencies of the forks.
HARD
11th ICSE
IMPORTANT
ISC Physics Class XI Part 1>Chapter 32 - Vibrations of Stretched Strings>NUMERICALS>Q 23
A weight is suspended from a sonometer wire. When the length of the wire between the bridges is 80 cm, the wire is found in unison with a tuning fork. But when an additional 0.1 kg weight is suspended from it then, to keep it in unison with the same fork, its length between the bridges is to be increased by 1 cm. What weight was suspended from the wire in the beginning?
HARD
11th ICSE
IMPORTANT
ISC Physics Class XI Part 1>Chapter 32 - Vibrations of Stretched Strings>NUMERICALS>Q 24
A tuning fork is marked 256 number. What does it indicate? It is in unison with the wire of a sonometer whose length is 81 cm and which is under a tension of 4 kg. How can this wire be brought in unison with a fork marked 384 by (i) changing the tension only, (ii) changing the length only?
HARD
11th ICSE
IMPORTANT
ISC Physics Class XI Part 1>Chapter 32 - Vibrations of Stretched Strings>NUMERICALS>Q 24
A tuning fork is marked‌ 256 number. What does it indicate? It is in unison with the wire of a sonometer whose length is 81 cm and which is under a tension of 4 kg. How can this wire be brought in unison with a fork marked 384 by (i) changing the tension only, (ii) changing the length only?
EASY
11th ICSE
IMPORTANT
ISC Physics Class XI Part 1>Chapter 32 - Vibrations of Stretched Strings>FOR DIFFERENT COMPETITIVE EXAMINATIONS>Q 1
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:
EASY
11th ICSE
IMPORTANT
ISC Physics Class XI Part 1>Chapter 32 - Vibrations of Stretched Strings>FOR DIFFERENT COMPETITIVE EXAMINATIONS>Q 2
Length of a string tied to two rigid supports is 40 cm. Maximum wavelength of a stationary wave produced on it is:
EASY
11th ICSE
IMPORTANT
ISC Physics Class XI Part 1>Chapter 32 - Vibrations of Stretched Strings>FOR DIFFERENT COMPETITIVE EXAMINATIONS>Q 3
The frequency of a 0.25 metre long stretched wire in its fundamental mode of vibration is 300 Hz. The velocity of the transverse waves in the wire will be: