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If a person is suffering from hypermetropia, which object he/she most likely to see blurred?
At what position of the object does a convex lens act as a magnifying glass?
A normal eye cannot clearly see objects closer than ___ cm.
Which one of these controls the amount of light entering the eye?
Because of which reflection do we see objects from every direction?
The second law of reflection states that
Second law of reflection: According to the second law, the angle of reflection is always equal to the angle of incidence. This ray of light will be reflected back along the same path.
The number of images formed by mirror at angle θ to each other is given by
The body which absorbs some light incident on it and reflects the remaining light is
A light year is the distance that light travels in one year and is equal to
Time taken for light to reach from the earth to the sun is