Question

. A student wants to project the image of a candle flame on a screen 90 cm in front of a mirror by keeping the flame at a distance of 15 cm from its pole. (a) Suggest the type of mirror he should use. (b) Determine the linear magnification in this case. (c) Find the distance between the object and its image. (d) Draw ray diagram to show the image formation in this case

Answer 1

Answer: a) concave mirror

(b) flame placed 15cm distance from its pole

so, object distance , u = -15cm

and screen placed 60cm distance from its pole

so, image distance,v = -60cm

Now, magnification = - image distance/object distance = -v/u

= -(-60cm)/(-15cm) = -4

Hence, linear magnification of the image is -4

(c) distance between object and image = distance of screen from pole of mirror - distance of object from pole of mirror

= B'P - BP = 60cm - 15cm = 45cm

(d) A candle , placed at B formed image on screen placed at B' as shown in figure.

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Explanation:

Answer 2

Answer:

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