Question

An object is placed (1)10cm (2)5cm infront of a concave mirror of radius of curvature 15 cm find the position nature and magnification of the image in each case

Answer 1

1). u= -10cm

f= -15/2cm

1/v= -2/15+1/10

1/v= -4+3/30

v= -30cm

Image is real and inverted

m=-1/3

2). u= -5 cm

f= -15/2cm

1/v= -2/15+1/5

1/v= 1/15

v=15cm

Image is virtual and erect

m= 3/1