2016 - WAEC Physics Past Questions and Answers - page 4
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
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))
The electricity meters in houses measure energy unit consumed in
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)
The p.d across a parallel-plate capacitor is 103V. If the distance between the two plates is 10cm. Calculate the magnitude of the electric field strength between the plates.
Two different materials, rubbed against each other acquired opposite charges when separated. This is an example of charging by
Two different materials, rubbed against each other acquired opposite charges when separated. This is an example of charging by
Which of the following factors does not affect the e.m.f of a primary cell? Its
Two magnets are used to magnetize a soft iron bar PQ as illustrated in the diagram given. The correct polarity at P and Q respectively
In storing magnets, keepers are used to