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If a lens has a power of -2 D, what type of lens is it?
If a lens has a power of -2 D, what type of lens is it?
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Q1
If a lens has a power of -2 D, what type of lens is it?
Convex lens
Concave lens
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A negative power indicates a concave lens.
Questions & Step-by-step Solutions
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Q
Q: If a lens has a power of -2 D, what type of lens is it?
Solution:
A negative power indicates a concave lens.
Steps: 6
Show Steps
Step 1: Understand what lens power means. Lens power is measured in diopters (D).
Step 2: Recognize that the sign of the power indicates the type of lens.
Step 3: Note that a positive power indicates a convex lens, which is thicker in the middle.
Step 4: Understand that a negative power indicates a concave lens, which is thinner in the middle.
Step 5: Since the given power is -2 D, it is negative.
Step 6: Conclude that a lens with a power of -2 D is a concave lens.
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