Suppose you have three concave mirrors A, B and C of focal length 10 cm, 15 cm and 20 cm. For eachconcave mirror you perform the experiment of image formation for three values of object distance of 10cm, 20 cm and 30 cm. Giving reason answer the following:(a) For the three object distances, identify the mirror/mirrors which will form an image of magnification-1.(b) Out of the three mirrors identify the mirror which would be preferred to be used for shavingpurposes/makeup.(c) For the mirror B, draw ray diagram for image formation for object distances 10 cm and 20 cm