Question

An object 4cm high place 15cm in front of a concave mirror of local length 15cm .The size and nature of the image are

Answer 1

Answer:

h=4cm

u=-15

f=-15

To calculate

v??

m??

Explanation:

1/f=1/v+1/u

1/-15=1/v+1/-15

1/-15+1/15=1/v

0/15=1/v

since, the object distance is -15 and the focal length is also -15 therefore the object is placed at the focus and the image is formed at infinity

also the image formed is real,inverted and highly enlarged

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