Physics

Physics past questions and answers from WAEC and JAMB

Page 27

Which of the following materials does not serve as a safety device in electrical circuits?

Connecting wires

Earth wire

Fuse

Switch

A body of mass m moving round a circle of radius r with a uniform speed v experiences a centripetal force F. The work done by the centripetal force on it is

$Fv$

zero

$Fmr$

$Fr/m$

The inner diameter of a small test tube can be measured accurately using a

Micrometer screw gauge

Pair of vernier calipers

Metre rule

Pair of dividers

An aeroplane lands on a runway at a speed of $180kmh^{-1}$ and is brought to a stop uniformly in $30$ seconds. What distance does it cover on the runway before coming to rest?

$360 m$

$540 m$

$957 m$

$750 m$

First