A candle is 30 cm from a concave mirror with focal length 15cm and on the mirror

Question

A candle is 30 cm from a concave mirror with focal length 15cm and on the mirror axis. A)Where is its image?             Answer= ____________ cm B) How do the image and object sizes compare?
            Answer= ______________  (image size/object size)
A candle is 30 cm from a concave mirror with focal length 15cm and on the mirror axis. A)Where is its image?             Answer= ____________ cm B) How do the image and object sizes compare?
            Answer= ______________  (image size/object size)

Explanation / Answer

From mirrors formula     1/f = 1/p + 1/q the image distance q = fx/x-f                                  =(15cm) (30cm) / 30-15 = 30cm (b) the size of the image            hi = -(q/p) ho = -ho so the image and object sizes are equal but are in oppositedirection.

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