Home / Aptitude Tests / Physics / A sonometer wire is ...
A sonometer wire is vibrating at frequency fo

A sonometer wire is vibrating at frequency fo. If the tension in the wire is doubled while the length and the mass per unit length are kept constant, the new frequency of vibration is

A.

fo/2

B.

2fo

C.

fo/√2

D.

fo√2

View answer & explanation

Correct answer is D

For a vibrating sonometer wire, the frequency
F = l/2l √(T/m)
and if the length, l and mass per unit length, m, are constant, then Fo ∝ √T => FoK√T or Fo/√T = K
=> F1o/√F1 = F2o/√F2
∴ F1o/√T1 = F2o/√T2

thus F2 = F3x√(2T1
__√T1


=

= Fox√2 x √T1
√T1


∴F2 = Fo x √2 = Fox√2

See all Physics questions & answers
See more JAMB questions & answers
Similar Questions

Which of the following units is derived? ...

In a given circuit, the cell P has an emf 1.5V and an unknown internal resistance while cell Q has a...

Which of the following are transverse waves? I. Ripples on water II. Sound waves in air III. Li...

The relative densities of zinc, brass, copper, gold and silver are respectively 7.1, 8.5, 8.9, 19.3,...

The secondary pigments consist of? ...

An equipment whose power is 1500W and resistance is 375 ohms would draw a current of ...

Sound of frequency below 20 Hz is called ...

A short chain is usually attached to the rear side of petro tanker trailing behind it to ensure that...

In an elastic collision I. Energy is conserved II. Energy is decreased III. Energy is increased...

The quantity of heat energy required to melt completely 1 kg of ice at - 30oC is [latent heat of fu...

Aptitude Tests

Data Interpretation Questions and Answers

Microsoft Office Questions and Answers

Numerical Reasoning Questions and Answers

Situational Judgement Questions and Answers

Personality Test

Spatial Reasoning Questions and Answers

Logical Reasoning Questions and Answers

Verbal Reasoning Questions and Answers

Puzzles Questions and Answers

Quantitative Reasoning Questions and Answers

Nigeria General Knowledge Questions and Answers

Typing Speed and Accuracy Test

Abstract Reasoning Questions and Answers

See all →