Answer to Question #61519 in Physics for hi

Question

1 Diopter is the unit of
linear magnification
power of lens
inverse of object distance from lens
inverse of image distance from lens
2 In an experiment involving the convex lens, , which of the following is NOT correct?
images must always be sharply focused
the tip of object pin must be at the same height as the centre of lens
images obtained must always be magnified
parallax error must be avoided
3 Describe the image of a candle positioned 20cm in front of a concave mirror of focal length 30cm
virtual, inverted, 12cm behind mirror and magnified 3 times
real, inverted, 12cm in front of mirror and diminished 3 times
virtual, erect, 60cm behind mirror and magnified 3 time
real, erect, 60cm in front of mirror and diminished 3 times

Answer 1

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