An object is placed at a distance of 10 cm from a co-axial combination of two lenses

An Object Is Placed At A Distance Of 10 Cm Physics Question

An object is placed at a distance of 10 cm from a co-axial combination of two lenses A and B in contact. The combination forms a real image three times the size of the object. If lens B is concave with a focal length of 30 cm. The nature and focal length of lens A is

Options

(a) convex, 12 cm
(b) concave,12 cm
(c) convex, 6 cm
(d) convex, 18 cm

Correct Answer:

convex, 6 cm

Explanation:

No explanation available. Be the first to write the explanation for this question by commenting below.

Related Questions:

  1. A concave mirror of focal length f₁ is placed at a distance d from a convex lens
  2. Maximum kinetic energy of electrons emitted in photoelectric effect increases when
  3. Current flows in semi-conductors through
  4. Out of the following which pair of quantities does not have same dimensions?
  5. The radioactivity of a certain material drops to 1/16 of the initial value in 2 hours.

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.

NEETLab Mobile App

Share this page with your friends

Be the first to comment

Leave a Reply

Your email address will not be published.


*