Question

An object is the placed at a distance of 4 cm in front of aconcave mirror whose focal length 5cm where is the image formed​

Answer 1

Answer:

Object Distance(u) = 10 cm. (negative)

Focal length of the lens (f) = 5 cm.

We know, convex mirror always forms the virtual, upright and diminished.Also, Object distance in the convex mirror is always negative where as Image distance and focal length are positive.

Now, Applying the Mirror's Formula,

f1 =v1 +u1

= 51 =v1 +1

=51 =10v(10−v)

10v=50−5v

15v=50

v=310

so the image distance (v) =3.33cm.