| ⇦ | 
| ⇨ |
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: - A galvanometer has a resistance 50Ω. A resistance of 5Ω is connected parallel to it.
- The maximum particle velocity in a wave motion is half the wave velocity.
- Length of second pendulum is
- When aluminium is added as an impurity to silicon, the resulting material is
- A solid sphere, a hollow sphere and a ring are released from top of an inclined
Topics: Ray Optics
(94)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A galvanometer has a resistance 50Ω. A resistance of 5Ω is connected parallel to it.
- The maximum particle velocity in a wave motion is half the wave velocity.
- Length of second pendulum is
- When aluminium is added as an impurity to silicon, the resulting material is
- A solid sphere, a hollow sphere and a ring are released from top of an inclined
Topics: Ray Optics (94)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply