Question

I have three concave Mirrors A B and C of focal length 10 cm and 15 cm and 20 CM for each concave mirror you perform the experiment of image formation for three values of object distance is of 10 cm and 20 cm and 30 cm by giving reason answer the following for three object distance identify the mirror mirror which will form an image of magnification -1,out of the three Mirrors identify the mirror which would be preferred to be used for sharing purposes and makeup for the mirror we draw ray diagram for image formation for object distance is 10 cm and 20 CM ​

Answer 1

Answer:

Image of magnification -1 will formed when object distance is 20cm in front of mirror A and when object distance is 30cm in front of mirror B. I guess the mirror that is ideal for shaving and makeup purposes should be mirror C as it has maximum focal length and we know that an enlarged image is formed when we place object is place between focus and pole.So, it would be easier for a person to get an enlarged image of face even by not getting the mirror too near to face.

Explanation:

We know that we get an image of magnification -1 when object if placed at the center of curvature in case of concave mirrors. Hope it helps..