Question

6. lenses are used as reading glass.
7. Sunlight (white light) is a combination of
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Answer 1

Explanation:

1 reading glasses are generally used by people suffering from long-sightedness or hypermetropia. A convex lens is used for correction. So reading glasses is made up of convex lens.

2 The color of the sun is white. The sun emits all colors of the rainbow more or less evenly and in physics, we call this combination "white". That is why we can see so many different colors in the natural world under the illumination of sunlight.