(a) What is a geostationary satellite? (b) Name two types of Lasers.
PHYSICS
WAEC 2022
(a) What is a geostationary satellite?
(b) Name two types of Lasers.
Explanation
(a) Ageostrationary satelite: is an artificial satellite whose period of revolution is equal to the period of rotation of the Earth.
OR
A satellite whose period of revolution is equal to 24 hrs/ 1 day.
(b) Types of lasers
i. Gas
ii. Solid state
iii. Semi-conductor
iv. Liquid
v. Chemical
vi. Fibre
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