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A lens has a power of -4 D. What is the type of lens?
A lens has a power of -4 D. What is the type of lens?
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Q1
A lens has a power of -4 D. What is the type of lens?
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A negative power indicates a concave lens.
Questions & Step-by-step Solutions
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Q
Q: A lens has a power of -4 D. What is the type of lens?
Solution:
A negative power indicates a concave lens.
Steps: 5
Show Steps
Step 1: Understand what lens power means. Lens power is measured in diopters (D).
Step 2: Identify the sign of the lens power. In this case, the power is -4 D.
Step 3: Know that a negative power indicates a specific type of lens.
Step 4: Remember that a negative power means the lens is a concave lens.
Step 5: Conclude that since the power is -4 D, the lens is a concave lens.
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