Question 4131:

• JAMB 2021

The lowest note emitted by a stretched string has a frequency of 40Hz. How many overtones are there between 40Hz and 180Hz?

A. 4
B. 3
C. 2
D. 1

Question 4132:

• JAMB 2021

A solid weighs 10.00N in air, 6N when forcefully immersed in water, and 7.0N when fully immersed in a liquid, X. Calculate the relative density of the liquid X.

A. \(\frac{5}{3}\)
B. \(\frac{4}{3}\)
C. \(\frac{3}{4}\)
D. \(\frac{7}{10}\)

Question 4133:

• JAMB 2021

When the temperature of a liquid increases, its surface tension

A. Decreases
B. Increases
C. Remains constant
D. Increases then decreases

Question 4134:

• JAMB 2021

A gas at a volume of V\(_{0}\) in a container at pressure p\(_{0}\) is compressed to one-fifth of its volume. What will be its pressure if the magnitude of its original temperature T is constant?

A. \(\frac{p_{0}} {5}\)
B. \(\frac{4p_{0}}{5}\)
C. P\(_{0}\)
D. 5P\(_{0}\)

Question 4135:

• JAMB 2021

A piece of substance of specific heat capacity 450Jkg\(^{-1}\)k\(^{1}\) falls through a vertical distance of 20m from rest. Calculate the rise in temperature of the substance on hitting the ground when all its energies are converted into heat. [g = 10ms\(^{-2}\)]


A. \(\frac{2}{9}\)ºC
B. \(\frac{4}{9}\)ºC
C. \(\frac{9}{2}\)ºC
D. \(\frac{9}{4}\)ºC