Waec Physics 2016 Past Questions and Answers

Question 31:

• WAEC 2016

The pair of musical instruments that works on the vibration of air in pipes is

A. Piano and the organ
B. Guitar and the flute
C. Trumpet and the violin
D. Flute and the trumpet

Question 32:

• WAEC 2016

An astronomical telescope has objectives and eye-piece lenses of focal length 3.5m and 5cm respectively. Determine the magnifying power of the telescope when in normal adjustment

A. 70.0
B. 17.5
C. 7.0
D. 0.7

Question 33:

• WAEC 2016

An aluminium cable of diameter 4 x 10^-3m and resistivity 3.0 x 10^-8\(\omega\)m has a resistance of 21\(\Omega\). Calculate the length of the cable. (\(\pi = 3.14\))

A. 8.0 x 10²m
B. 8.8 x 10³m
C. 8.0 x 10⁴m
D. 8.8 x 10⁴m

Question 34:

• WAEC 2016

The electricity meters in houses measure energy unit consumed in

A. Kilowatt-hour
B. Volt
C. Ampere
D. Coulomb

Question 35:

• WAEC 2016

A man and his friend have masses 70kg and 60kg respectively. If they are seated 1.0m apart, calculate the gravitational force of attraction between them. (G = 6.67 x 10^-11 Nm² kg^-2)

A. 1.59 x 10^-14 N
B. 2.80 x 10^-7 N
C. 1.30 x 10^-2 N
D. 6.30 x 10¹³ N