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If the image formed by a convex mirror of focal length 30 cm is a quarter of the size of the object, then the distance of the object from the mirror will be
Options
(a) 30 cm
(b) 60 cm
(c) 90 cm
(d) 120 cm
Correct Answer:
90 cm
Explanation:
Given, f = + 30 cm and m = 1 / 4 Magnification, m = f / (f – u)
Therefore, 30 / (30 – u) = 1 / 4
30 – u = 120
⇒ u = -90 cm
Related Questions: - In Young’s double slit experiment, the wavelength of the light used is doubled
- The dimensional formula for Boltzmann’s constant is
- A thin prism of angle 15⁰ made of glass of refractive index µ₁ = 1.5 is combined
- When radiation is incident on a photoelectron emitter,
- When a beam of light is used to determine the position of an object,
Topics: Ray Optics
(94)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- In Young’s double slit experiment, the wavelength of the light used is doubled
- The dimensional formula for Boltzmann’s constant is
- A thin prism of angle 15⁰ made of glass of refractive index µ₁ = 1.5 is combined
- When radiation is incident on a photoelectron emitter,
- When a beam of light is used to determine the position of an object,
Topics: Ray Optics (94)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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