Nilima Nilima
  • 0
Enlightened

Question 8: NCERT Solutions for 12th Class Physics: Chapter 9-Ray Optics and Optical Instruments

  • 0

Question 8: NCERT Solutions for 12th Class Physics: Chapter 9-Ray Optics and Optical Instruments

A beam of light converges at a point P. Now a lens is placed in the path of the convergent beam 12 cm from P. At what point does the beam converge if the lens is
(a) a convex lens of focal length 20 cm, and
(b) a concave lens of focal length 16 cm?

 

Related Questions

Leave an answer

Leave an answer

1 Answer

  1. Solution:
    (a) The convex lens is placed in the path of convergent beam.

    The image 1 is formed by further converging beams at a distance of 7.5 cm from lens.
    (b) A concave lens is placed in the path of convergent’ beam, the concave lens further diverge the light.The image I is formed by diverged rays at 48 cm away from concave lens.

    Check the complete chapter with solutions.

    NCERT Solutions for 12th Class Physics: Chapter 9-Ray Optics and Optical Instruments