Self Studies

Ray Optics and Optical Test - 16

Result Self Studies

Ray Optics and Optical Test - 16
  • Score

    -

    out of -
  • Rank

    -

    out of -
TIME Taken - -
Self Studies

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Self Studies Self Studies
Weekly Quiz Competition
  • Question 1
    1 / -0
    The rays of different colors fail to converge at a point after going through a converging lens. This defect is called _________.
    Solution
    Chromatic aberation is the defect due to which rays of different wavelength converge at various point after passing through converging lens. It is due to varying refractive index for various wavelength.
  • Question 2
    1 / -0
    How should people wearing spectacles work with a microscope?
    Solution
    Answer is C.

    If operators using a microscope usually wear spectacles (glasses) for activities such as working at their PC, they often need to remove them when looking through a microscope so that they can align their eyes correctly with the eyepieces.
  • Question 3
    1 / -0
    In optical instruments, the lenses are used to form images by :
    Solution
    Answer is B.

    A lens is a piece of glass (plastic) with two refracting surfaces, which are either curved (e.g., a segment of a sphere) or plain.
    Lenses are used to form images by refraction in optical instruments (microscopes, telescopes, cameras, etc.)
    There are two types of lenses: converging (thickest in the middle) and diverging (thickest at the edges).
  • Question 4
    1 / -0
    In case of a real and inverted image, the magnification created by the mirror is
    Solution
    Magnification of image created by mirror is defined as
    m=sizeofimagesizeofobjectm=\dfrac{size of image}{size of object}
    and in case of inverted image. Size of image is negative whereas size of object is positive. Hence , magnification produced is negative and it can be unity when object is placed at center of curvature and infinity when object is at focus.
  • Question 5
    1 / -0
    If a drop of water is introduced between the glass plate and a convex lens in a Newton's ring system, the ring system
    Solution
    When a drop of water is introduced between the glass plate and a convex lens then the refractive index of the medium between them increases. So the ring system contracts in Newton's ring system.
  • Question 6
    1 / -0
    In case of a virtual and erect image, the magnification created by the mirror is
    Solution
    Magnifaction of a mirror is defined as
    m=sizeofimagesizeofobjectm=\dfrac{size of image}{size of object}
    and since, in case of virtual and errect image, size of image and object both are positive  . Hence magnification created by mirror is positive.
  • Question 7
    1 / -0
    The sum of the reciprocals of object distance and image distance is equal to the __________ of a mirror.
    Solution
    1v+1u\dfrac{1}{v} + \dfrac{1}{u} = 1f\dfrac{1}{f}
    Hence, it is (B)
  • Question 8
    1 / -0
    When a wave travels from one medium to another, the quantity which will not change is its
    Solution
    When a wave travels from one medium to another, the amplitude, wavelength, velocity and intensity change but frequency does not change.
  • Question 9
    1 / -0
    How should people wearing spectacles work with a microscope ?
    Solution

    If you wear eyeglasses, you may wonder whether you should keep them on or take them off while viewing samples through the microscope. If the glasses merely adjust for nearsightedness or farsightedness, or old age, then there is no need to wear glasses. You may find it more comfortable to do this if the eyepieces have rubber eyeshields which help block out light from your peripheral vision.

  • Question 10
    1 / -0
    The lateral displacement depends on ______
    Solution
    lateral displacement due to a slab is given by δ=t(μ1)\delta=t(\mu-1); where t is thickness of the medium and μ\mu is refractive index of medium.
Self Studies
User
Question Analysis
  • Correct -

  • Wrong -

  • Skipped -

My Perfomance
  • Score

    -

    out of -
  • Rank

    -

    out of -
Re-Attempt Weekly Quiz Competition
Self Studies Get latest Exam Updates
& Study Material Alerts!
No, Thanks
Self Studies
Click on Allow to receive notifications
Allow Notification
Self Studies
Self Studies Self Studies
To enable notifications follow this 2 steps:
  • First Click on Secure Icon Self Studies
  • Second click on the toggle icon
Allow Notification
Get latest Exam Updates & FREE Study Material Alerts!
Self Studies ×
Open Now