JEE Mains · Physics · STD 12 - 9. Ray optics and optical instruments
Refer the figure given below. \(\mu_1\) and \(\mu_2\) are refractive indices of air and lens material. The height of image will be _______ cm.
- A \(1\)
- B \(0.5\)
- C \(1.2\)
- D \(0.25\)
Answer & Solution
Correct Answer
(A) \(1\)
Step-by-step Solution
Detailed explanation
Taking the pole \(P\) as the origin and the direction of incident light as positive: \(\mu_1 = 1\) (air), \(\mu_2 = 1.5\) (lens) \(u = -40\text{ cm}\) \(R = -20\text{ cm}\) (centre of curvature lies to the left of \(P\)) \(h_o = +2\text{ cm}\) Using the formula for refraction at…
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