If focal length of a concave mirror is 30cm an object is placed at dis

1.	If focal length of a concave mirror is 30cm an object is placed at distance of 15 cm from the mirror where will the image formed? Also tell nature of image. *
Answer» f=-30cm u=-15cm v=? 1/f=1/u+1/v 1/v=1/f-1/u =(1/-30)-(1/-15) =(1/-30)-(2/-30) =-1/-30 =1/30 v=+30cm The IMAGE is VIRTUAL,ERRECT and MAGNIFIED

If focal length of a concave mirror is 30cm an object is placed at distance of 15 cm from the mirror where will the image formed? Also tell nature of image. *

Answer»

f=-30cm

u=-15cm

v=?

1/f=1/u+1/v

1/v=1/f-1/u

=(1/-30)-(1/-15)

=(1/-30)-(2/-30)

=-1/-30

=1/30

v=+30cm

The IMAGE is VIRTUAL,ERRECT and MAGNIFIED

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If focal length of a concave mirror is 30cm an object is placed at distance of 15 cm from the mirror where will the image formed? Also tell nature of image. *

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