Question
The image formed by a concave mirror:
  1. Is always real.
  2. Is always virtual.
  3. Is certainly real if the object is virtual.
  4. Is certainly virtual if the object is real.

Answer

  1. Is certainly real if the object is virtual.

Explanation:

Object
Image
O1
I1
O2
I2
O3
I3
O4
I4

Here O4 is virtual oblect & I4 is real image.

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