Curriculum
Course: Igcse Physics
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Curriculum

Igcse Physics

1. Motion, Forces and Energy

0/161 Dr Dabour Hub Science Diagram and Course Material

2. Thermal Physics

0/75 Dr Dabour Hub Science Diagram and Course Material

3. Waves

0/77 Dr Dabour Hub Science Diagram and Course Material

4. Electricity and Magnetism

0/119 Dr Dabour Hub Science Diagram and Course Material

5. Nuclear Physics

0/39 Dr Dabour Hub Science Diagram and Course Material

6. Space Physics

0/47 Dr Dabour Hub Science Diagram and Course Material
Quiz

3.3.4 Communications – Check yourself

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1.
Which wave is used to communicate with satellites?
Long-wave radio
Microwaves
Infrared
Ultraviolet
2.
A geostationary satellite has an orbital period of
90 minutes
12 hours
24 hours
1 year
3.
An advantage of optical fibre over copper cable is
it is heavier
it carries electricity
it is easily tapped
it carries more information with less loss
4.
A signal travels 4.5 × 107 m at 3.0 × 108 m s−1. The time is
0.015 s
0.15 s
1.5 s
6.7 s
5.
A TV remote uses
gamma rays
radio waves through walls
infrared
X-rays
6.
Total internal reflection in a fibre keeps light inside because
the glass is a mirror
air is blown through it
the light is absorbed
the light is reflected at angles above the critical angle
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