Mirror Formula
Easyphysics
Concave mirror formula (paraxial) is?
Select the correct option:
Solution
Incorrect! Answer:
1/f = 1/v + 1/u
- Mirror Equation: This relates object distance (u), image distance (v), and focal length (f) for spherical mirrors.
- General Formula: v1+u1=f1.
- Property: This formula applies to both concave and convex mirrors, provided correct sign conventions are used.
- Focal Length: For a concave mirror, f is negative (left of the vertex). For a convex mirror, f is positive.
- Magnification Link: Linear magnification for mirrors is given by m=−v/u.
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About This Question
- Subject
- physics
- Chapter
- optics
- Topic
- mirror formula
- Difficulty
- Easy
- Year
- 2025
Solution
Correct Answer:
1/f = 1/v + 1/u
- Mirror Equation: This relates object distance (u), image distance (v), and focal length (f) for spherical mirrors.
- General Formula: v1+u1=f1.
- Property: This formula applies to both concave and convex mirrors, provided correct sign conventions are used.
- Focal Length: For a concave mirror, f is negative (left of the vertex). For a convex mirror, f is positive.
- Magnification Link: Linear magnification for mirrors is given by m=−v/u.
This easy difficulty physics question is from the chapter optics, covering the topic of mirror formula. It appeared in the 2025 exam.
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