Physics
Page 47
a.
A heavy weight suspended on a string
b.
The beam of a balance in use
c.
A heavy-based table lamp
d.
A cone resting on its slant edge
a.
12.1°C
b.
2.1°C
c.
1.2°C
d.
0.1°C
a.
between the focus and the lens
b.
at the focus
c.
between the focus and twice the focal length
d.
beyond twice the focal length
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