Please wait...

CDS Science Physics Test 118
Result
CDS Science Physics Test 118

  • /

    Score

  • -

    Rank
Time Taken: -
  • Question 1/5
    1 / -0
    Concave lens is also known as ______________________.
    Solutions

    The correct option is “Diverging lens”. A concave lens is the one that diverge a straight light beam coming from the source to form a diminished, upright, virtual image. They are also known as Diverging lens.

  • Question 2/5
    1 / -0

    Directions For Questions

    Directions: Answer the following questions by selecting the most appropriate option.

    ...view full instructions

    The lens used to rectify long sight is
    Solutions
    The lens used to rectify long sight is convex lens. A hypermetropic person may have blurred vision when looking at objects close to them, and clearer vision when looking at objects in the distance. By placing a convex (plus powered) lens in front of a hypermetropic eye, the image is moved forward and focuses correctly on the retina.
  • Question 3/5
    1 / -0
    The power of a lens “——-“
    Solutions
    The lens capacity is the diopter.
  • Question 4/5
    1 / -0
    A lens is immersed in a fluid, whose refractive index is higher than the refractive index of the lens. In such a case -
    Solutions

    When the lens is immersed in a fluid whose refractive index is greater than the refractive index of the lens, then its focal length increases, reducing its power. Along with this, the nature of the lens also changes, that is, the convex lens behaves like a concave lens and the concave lens behaves like a convex lens.

    When immersing the lens in the same refractive index fluid, in such a situation, the focal length of the lens becomes infinite, its power becomes zero. It behaves like a flat plate. When the lens is immersed in such fluid, it is not visible.

  • Question 5/5
    1 / -0
    Which type of lens is used in microscope?
    Solutions

     A convex lens is the one which converges a straight beam of light coming from the source. They are also known as Converging Lens. Convex lenses are used in magnifying glass, microscope, eyeglasses (to correct hypermetropia).

User Profile
-

Correct (-)

Wrong (-)

Skipped (-)

  • 1
  • 2
  • 3
  • 4
  • 5
Get latest Exam Updates
& Study Material Alerts!
No, Thanks
Click on Allow to receive notifications
×
Open Now