Question

Renu is seventh standard student. One day her grandfather was reading a newspaper. He
read an advertisement regarding promotion sale of electronic devices. Some terms and
conditions were also given with the advertisement. But it was so small to read. So
grandfather asked Renu to take lens from the cupboard to read that. Renu was confused to
see two different types of lenses. But he could select the proper one and gave to grandfather.
He appreciated Renu for selecting the proper lens.
Another day she noticed that her friend Minnu, who can't see distant objects clearly is
using another type of lens for her spectacles.
a) Name the lens that Renu selected for his grandfather. What are the properties of image
formed by the lens in this case?

b) Which lens does Minnu use to see distant objects clearly?
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Answer 1

Answer:

a) convex lens

b) concave lens

hope it helps!!!!!!