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

2.3.6 Investigating IR Radiation – Check yourself

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  • Questions count: 6
  • Passing grade: B+
  • Time limit: 10 minutes
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1.
In a Leslie cube experiment, which face gives the highest detector reading?
shiny white
shiny silver
matt black
matt white
2.
Why must the detector be at the same distance from each face?
to avoid damage
intensity depends on distance
to keep the cube cool
it does not matter
3.
A black can cools from 90 °C to 60 °C in 8 min; a silver can takes 14 min. This shows
black is a better emitter
they are equal
silver is hotter
silver is a better emitter
4.
A dependent variable in the absorption experiment is
the distance
the heater power
the colour of the plate
the temperature rise of the plate
5.
Which would improve the reliability of the experiment?
use different volumes
use one reading
repeat and average
change the distance
6.
A temperature-time graph for a cooling can has a steeper initial slope for the black can. This means
it is a poorer emitter
it emits energy faster
it absorbs nothing
it conducts better
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Part of 2. Thermal Physics — see every lesson and quiz in this unit.
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