Question

1.)linear magnification produced by a concave mirror may be :- a.)less than 1 or equal to 1 b.)more than 1 or equal to 1 c.)less tha 1,more than 1 or equal to 1 d.)less than 1 or more than 1 plz give answer with explanation

Answer 1

its the option C
The image is real, inverted and diminished. So the mirror is a concave mirror. 
A diminished real image is formed when the object is kept beyond centre  of curvature.

Answer 2

Answer:

c> Less than 1, more than 1 or equal  to 1

Explanation:

Because -

Positive magnification- means both the object and image are upright .

since virtual image is always erect, so magnification indicates that the image formed by a spherical mirror is virtual.

Negative magnification- if  the object is inverted the image is real and vice versa.. negative magnification indicates that the image forms by a spherical mirror is real

 So, magnification in concave mirror-

  In positive magnification is 1 or equals to 1

  In negative magnification is -1 or less than 1

  magnification can be 1 , more than 1 or less than 1