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Match it! Select the correct answer from the pull down...Good luck!
What does the term 'focus' mean?
two convex lenses
to make a clear image by adjusting the distance between the screen and the lens
far-sightedness
reflecting
are opaque glass fibres
the light rays need to be re-focussed using lenses
carries a small amount of energy
iris
To fix astigmatism
two convex lenses
to make a clear image by adjusting the distance between the screen and the lens
far-sightedness
reflecting
are opaque glass fibres
the light rays need to be re-focussed using lenses
carries a small amount of energy
iris
Which of the following is referred to when we speak about the colour of someone's eyes?
two convex lenses
to make a clear image by adjusting the distance between the screen and the lens
far-sightedness
reflecting
are opaque glass fibres
the light rays need to be re-focussed using lenses
carries a small amount of energy
iris
What does a microscope use to magnify objects?
two convex lenses
to make a clear image by adjusting the distance between the screen and the lens
far-sightedness
reflecting
are opaque glass fibres
the light rays need to be re-focussed using lenses
carries a small amount of energy
iris
The Hubble telescope is an example of a ____________ telescope
two convex lenses
to make a clear image by adjusting the distance between the screen and the lens
far-sightedness
reflecting
are opaque glass fibres
the light rays need to be re-focussed using lenses
carries a small amount of energy
iris
Which of the following is FALSE about laser light?
two convex lenses
to make a clear image by adjusting the distance between the screen and the lens
far-sightedness
reflecting
are opaque glass fibres
the light rays need to be re-focussed using lenses
carries a small amount of energy
iris
Which of the following is FALSE about optical fibres
two convex lenses
to make a clear image by adjusting the distance between the screen and the lens
far-sightedness
reflecting
are opaque glass fibres
the light rays need to be re-focussed using lenses
carries a small amount of energy
iris
Lizzy cannot see far-away objects clearly; she has
two convex lenses
to make a clear image by adjusting the distance between the screen and the lens
far-sightedness
reflecting
are opaque glass fibres
the light rays need to be re-focussed using lenses
carries a small amount of energy
iris
Check it!