Q. 7 Observe the figure and answer the following questions. – 118
a) Why do the images of the faces in this mirror appear distorted?
b) What should be the height of the mirror at home to the see the
full image of girl.
c) Name the types of spherical mirrors.
2) How these spherical mirror are identified.
2-8 When a bright object is placed 10 cm away from a concave mirror, its real image is formed at a
distance 40 cm from the mirror. What is focal length of the mirror? 9
Answers
ANSWER:
1. a) Frontal view images of faces with symmetrical distortions are also roughly symmetrical. ... If the asymmetric FDAE occurs at or after the level of visual processing where face representations acquire reflectional and/or viewpoint invariance, the aftereffect should also affect perception of the mirror image.
b) The man is twice as tall as the distance between points X and Y. In other words, to view an image of yourself in a plane mirror, you will need an amount of mirror equal to one-half of your height. A 6-foot tall man needs 3-feet of mirror (positioned properly) in order to view his entire image.
c) Spherical mirrors can be of two types: Convex mirror and concave mirror.
- Concave mirror: A spherical mirror whose reflecting surface faces towards the center of the sphere i.e., curved inwards is known as concave mirror.
2. Convex mirror: A spherical mirror with reflecting surface curved outwards is known as convex mirror.
2. Since it's curved inward, when one looks at a concave mirror, it looks like the person is looking into a cave. A concave mirror is also known as a “Converging Mirror” since in these type of mirrors light rays converge at a point after they strike and are reflected back from the reflecting surface of the concave mirror
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