WAEC PRACTICAL:- A SIMPLE PENDULUM

A SIMPLE PENDULUM

A simple pendulum is an arrangement, wherein an inelastic thin string of ideally no mass with a heavy point bob at one end and tied to a fixed horizontal rod, hanging freely and is free to make movement about mean point.

The precautions while measuring period of oscillations:

>>Record time for arround 20 oscillations. And record the time for a repeated number of 20 oscillations and find the average period of oscillations.

>>The length of the pendulum should take into account hook, sring length, and radius of the bob.

>>The sring should not be streched too much while measuring its length.

>>The amplitudes should be very small, or the angle of the amplitude should be very small.

calculated T = mg + Fc

WAEC PRACTICALS:-PRECAUTIONS WHEN TAKING RAY BOX/LENS READING

PRECAUTIONS WHEN TAKING RAY BOX/LENS READING

LENS: A lens is a transmissive optical device that focuses or disperses a light beam by means of refraction.

PRECAUTIONS

1. Pins are located vertically.

2. Pins are adequately spaced

3. Avoided parallax error while reading the protractor/ruler.

4. Repeated readings (shown on table and traces)

5. Neat traces.

NB: only 3 precautions will be asked
Take note of this

WAEC PRACTICAL:-PRECAUTIONS WHEN TAKING POTENTIOMETER READING

PRECAUTIONS WHEN TAKING POTENTIOMETER READING

POTENTIOMETER: Is a device used to compare the emf s of the cells.

Precautions
1. Jockey should not be dragged along the wire.
2. The current volume should be small as possible.
3. Current should be passed only while taking the reading.

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