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Question
: Concave lens : : 
: ______
Solution
: Concave lens : : : convex lens
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RELATED QUESTIONS
Make a diagram to show how hypermetropia is corrected. The near point of a hypermetropic eye is 1 m. What is the power of the lens required to correct this defect? Assume that the near point of the normal eye is 25 cm.
Solve the following example.
Doctor has prescribed a lens having power +1.5 D. What will be the focal length of the lens? What is the type of the lens and what must be the defect of vision?
Name the defect shown in the diagram.
Find the odd one out and give its explanation.
Hypermetropia can be corrected using concave lens of proper focal length.
Write scientific reason.
Farsightedness, this defect can be corrected by using convex lens.
The defect of vision in which the person is able to see a distant object distinctly but cannot see nearby objects clearly is called:
Assertion: The near point of a hypermetropia eye is more than 25 cm away.
Reason: Hypermetropia is corrected using spectacles containing concave lenses.
Draw ray diagram showing hypermetropic eye.
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Differentiate between members of the following pair with reference to what is asked in the bracket.
Myopia and Hyperopia (type of lens used for correction).
