Waec Physics 2000 Past Questions and Answers

Question 31:

• WAEC 2000

A turning fork of frequency 600Hz is sounded over a closed resonance tube. If the first and second resonant positions are 0.130m and 0.413m respectively, calculate the speed of sound in air

A. 508.4ms^-1
B. 480.0ms^-1
C. 339.6ms^-1
D. 169.8ms^-1

Question 32:

• WAEC 2000

loudness increases as a vibrating tuning fork is brought nearer the end of a pipe containing air column due to

A. Resonance
B. Echo
C. Reverberation
D. Diffraction

Question 33:

• WAEC 2000

the factor which enables the ear to distinguish between a note played on different instruments is the

A. Pitch
B. Speed
C. Harmonics
D. Loudness

Question 34:

• WAEC 2000

An object is situated within the Earth's gravitational field. Which of the following factor does not affect the acceleration of free fall g?

A. The distance of the object from the centre of the earth
B. The latitude of the earth on which the object is situated
C. Rotation of the earth
D. The mass of the object

Question 35:

• WAEC 2000

The capacitance of a parallel-plate capacitor is increased by making the area of the plates

A. Small and their seperation large
B. Large and their seperation small
C. And their seperation small
D. And their seperation equal