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NEET UG Ray Optics and Optical Instruments — practice questions — page 4

Explore 170 free Ray Optics and Optical Instruments questions in NEET UG Physics. Open each question or exercise to read its content, reference answers and available explanation.

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Ray Optics and Optical Instruments questions and exercises with answers

Showing questions 91–120 of 170.

Quick picks on opticsRead the answer and worked solution →Red light or violet lightRead the answer and worked solution →A common sign convention lets one formula handle mirrors that are:Read the answer and worked solution →Rays incident close to the pole and at small angles are called:Read the answer and worked solution →A parallel beam striking a concave mirror is reflected so that it:Read the answer and worked solution →A parallel beam striking a convex mirror reflects so that it appears to:Read the answer and worked solution →The point F on the axis where reflected rays meet is the principal:Read the answer and worked solution →The plane through F normal to the principal axis is called the:Read the answer and worked solution →Linear magnification is the ratio of image height to:Read the answer and worked solution →With proper sign convention, the mirror formulas hold for images that are:Read the answer and worked solution →Light passing through a prism is studied using a prism that is:Read the answer and worked solution →The angle at which light leaves the second face of a prism is the angle of:Read the answer and worked solution →The angle between the emergent ray and the incident ray direction is the:Read the answer and worked solution →The total deviation through a prism is the sum of deviations at how many faces?Read the answer and worked solution →Besides bending rays, a prism can also be used to:Read the answer and worked solution →A simple magnifier is a converging lens of focal length that is:Read the answer and worked solution →The near point of the eye is taken as a distance of about:Read the answer and worked solution →The maximum magnification of a simple microscope is described as:Read the answer and worked solution →For much larger magnification, one uses lenses numbering:Read the answer and worked solution →In a compound microscope, the lens nearest the object is the:Read the answer and worked solution →The objective of a compound microscope forms an image that is:Read the answer and worked solution →A telescope provides angular magnification of objects that are:Read the answer and worked solution →A mirror used as a telescope objective is free from aberration that is:Read the answer and worked solution →A reflecting telescope of the folded design is named after:Read the answer and worked solution →True or false on ray opticsRead the answer and worked solution →Quick picks on ray opticsRead the answer and worked solution →Match each term to its meaningRead the answer and worked solution →Concave or convex mirrorRead the answer and worked solution →Microscope or telescopeRead the answer and worked solution →Trace a ray through a prismRead the answer and worked solution →

Worked practice questions

Quick picks on optics

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Questions
  1. Question
    The unit of lens power is the:
    Choices
    1. Dioptre
    2. Diameter
    3. Dilation
    Correct choice
    Dioptre
  2. Question
    Total internal reflection is used in:
    Choices
    1. Optical fibres
    2. Ordinary mirrors
    3. Opaque screens
    Correct choice
    Optical fibres
  3. Question
    The critical angle matches a refraction angle of:
    Choices
    1. 30 degrees
    2. 60 degrees
    3. 90 degrees
    Correct choice
    90 degrees
  4. Question
    Dispersion arises because index varies with:
    Choices
    1. Frequency
    2. Firmness
    3. Fluidity
    Correct choice
    Frequency
Instructions
Tap the correct answer before the round moves on.
_Source: syllabus Physics Part II, Ch 9 'Ray Optics and Optical Instruments'_

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Red light or violet light

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Left
Red
Items
  1. Item
    About 700 nm
    Answer
    Red
  2. Item
    Long wavelength
    Answer
    Red
  3. Item
    Bends the least
    Answer
    Red
  4. Item
    Travels fastest
    Answer
    Red
  5. Item
    About 400 nm
    Answer
    Violet
  6. Item
    Short wavelength
    Answer
    Violet
  7. Item
    Bends the most
    Answer
    Violet
Right
Violet
Instructions
Swipe left for red light, right for violet light.
_Source: syllabus Physics Part II, Ch 9 'Ray Optics and Optical Instruments'_

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A common sign convention lets one formula handle mirrors that are:

  1. Spherical
  2. Flat only
  3. Square cut
  4. Cylindrical
Show answer and solution

Correct answer: A. Spherical

1. Concave and convex cases would otherwise need separate rules. 2. The convention makes one formula serve them all. 3. That single formula covers spherical mirrors. _Source: syllabus Physics Part II, Chapter 9, Ray Optics and Optical Instruments._

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