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Lenses - Quiz - gcsescience.com.
1.
A convex lens is
a) Thinner in the middle and thicker at the edges
b) Thicker in the middle and thinner at the edges
c) A diverging lens
d) Flat
2.
A ray entering along a normal
a) Bends towards the focal point
b) Bends away from the focal point
c) Passes straight through
d) Is a virtual ray
3.
A ray passing through the centre of a lens
a) Bends towards the focal point
b) Bends away from the focal point
c) Passes straight through
d) Is a virtual ray
4.
For a magnifying glass, the image is
a) Virtual, upright and bigger than the object
b) Real, upright and bigger than the object
c) Virtual, inverted and bigger than the object
d) Greener than the object
5.
A concave lens is
a) A cold lens
b) A hot lens
c) A converging lens
d) A diverging lens
6.
For a concave lens, the image is
a) Virtual, upright and bigger than the object
b) Virtual, upright and smaller than the object
c) Real, upright and bigger than the object
d) Real, inverted and bigger than the object
7.
The distance from the focal point to the centre of the lens is called
a) The focus
b) The focal length
c) The focal width
d) The aperture
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