Waec Physics Past Questions and Answers

Question 2026:

• WAEC 2021

The distance between a node and its adjacent antinode of a transverse wave is equal to?

A. Half of the wavelength.
B. The wavelength.
C. Thrice the wavelength.
D. Quarter of the wavelength.

Question 2027:

• WAEC 2021

Which of the sketched graphs below illustrates the correct variation of the gravitational force, Fg between two objects and the distance, d, between the centres?

A. A
B. B
C. C
D. D

Question 2028:

• WAEC 2021

A current of 2A passes through a wire of resistance 4Ω for 3 minutes. Calculate the energy lost.

A. 960J
B. 1440J
C. 2880J
D. 48J

Question 2029:

• WAEC 2021

Which of the following statements about the universal gravitational constant, G, is true?

A. It is fundamental quantity.
B. It has dimension M-¹L³T-².
C. Its S.I. unit is N m${}^2$kg
D. It is a vector quantity

Question 2030:

• WAEC 2021

The sketched graph represents a progressive wave moving from the left to the right. The period the wave is 0.125s.
Determine the values of the amplitude and wavelength, respectively, of the wave.

A. 8 cm; 27 cm
B. 8 cm; 9 cm
C. 4 cm; 9 cm
D. 16 cm; 27 cm