An electron of charge 1.60 x 10\(^{-19}\) C is accelerated under a potential difference of 1.0 x 10\(^5\) V. Calculate the energy of the electron in joules.

State three methods of polarizing an unpolarized light

Explain why water in a narrow glass tube has a concave meniscus while mercury, in the same tube, has a convex meniscus.

<img alt="" src="https://data.ulearngo.com/assets/10deb348-f40f-4710-93fe-e4bff2117599"/>In fig. la and fig.1 b above, Ida and Wb represent the respective loads on a spring placedtiear a 30 cm rule, when in air and when in water:(a) Identify the force causing a shrink in the spring in fig.(b).(b) Given that the force constant of the spring is 2.0 x 10\(^{11}\) Nm\(^{-1}\), calculate the work done by the force in causing the shrink.

(a). State: (a) two applications of electrolysis in an industry(b) one application of electrolysis in a school laboratory.

State: (a) the difference between plane polarized light and ordinary light;(b) two uses of polaroids.

(a) Explain diffusion.(b) Give one reason why the rate of diffusion is higher in gases than in liquids at the same temperature.

A stone projected horizontally from the top of a tower with a speed of 4 ms\(^{-1}\) lands on the level ground at a horizontal distance of 25 m from the foot of the tower. Calculate the height of the tower. = 10 ms\(^{-2}\)]

2011 WAEC SSCE Physics Past Questions