Click here for :Free SSC Mock test by topic

A laser beam is always-
1)a convergent beam

2)a divergent beam

3)a parallel beam

4)divergent to start with and parallel later on


  • : 685
  • : 15
    Previous Next

    a parallel beam

    Suggest other answer
    Login to Discuss/suggest the answer...


    Anirudh
    39306
  • Exam: Light QUESTIONS





    Recommended Learning for you

    In the human eye, the focussing is done by:
    Two plane mirrors A and B are placed at a distance 12 cm apart facing towards each other. An object is placed in between them at a distance 8 cm from the mirror A. What will be the distance between the first two images formed in the mirror B ?
    The focal length of the lens in a photographic camera is 5 cm. What is the power of the lens ?
    The image formed on the retina of a human eye is
    A lens, immersed in a liquid becomes in visible when -
    An equiconvex lens is prepared from a glass of refractive index 1.5. The radius of curvature of the surface is 0.5 m. The focal length of the lens is-
    A light wave travelling in a transparent homogeneous medium enters another homogeneous transparent medium of higher refractive index. The speed of light in the second medium;
    In a healthy human eye, the focussing is done by the
    The magnifying power of a telescope can be increased by=
    An object is kept 5 cm in front of a concave mirror of focal length 15 cm. What will be the nature of the image ?
    Close(X)
    Subscribe here for free mock test on IAS PCS SSC and other competitive exam. Signup here to get SSC CGL Solution and main exam study material

    Share the Knowledge

    You can help us to improve by giving your valuable suggestions at admin@quhasa.com

    By using the service of this site, I agree that I will serve wholeheartedly and will not indulge in any sort of activity that threats the integrity of the organisation I am working for / I work for.
    I have a firm believe in the notion that knowledge should be open source and helping the needy and deserving part of society will always be my motto.

    Knowledge is the power, Dont miss any paper, Subscribe to us







    Follow us at



    Privacy Policy