13 Convex mirrors are mostly used as
14 Which of the following is NOT true of experiments involving curved mirrors?
image distance is negative for for real image
object distance is positive
image distance is negative for virtual image
focal length is negative for convex mirrors
15 Which of the following is NOT applicable when plotting the graph of experimntal data?
Lines of bestfit should always be used
circled dots or crosses may be used to show plotted points
thin, sharp and continuous lines are acceptable
the scale must be chosen to make the graph occupy as small as possible of the graph page
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