Navigate

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 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.

AMU2012
admin:

Related Questions

  1. The average power dissipated in AC circuit is 2 W. If a current flowing through
  2. A particle is executing the motion x=Acos (ωt-θ). The maximum velocity of the particle is
  3. In the series resonance the value of impedence is 3 Ω and the resistance is 4Ω,
  4. The electric field in a certain region is given by E=5i ̂-3ĵ kV/m. The potential
  5. A body is rolling down an inclined plane.If KE of rotation is 40% of KE in a translatory