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DISPERSION OF LIGHT MCQs

Total Questions : 25 | Page 1 of 3 pages
Question 1. How many colours does the white light consist of?
  1.    5
  2.    6
  3.    7
  4.    8
 Discuss Question
Answer: Option C. -> 7
Question 2. If medium A is optically denser than medium B, then the speed of light is
  1.    the same in both mediums.
  2.    higher in medium A than in medium B.
  3.    higher in medium B than in medium A.
  4.    higher in medium A or B depending on which medium is thicker.
 Discuss Question
Answer: Option C. -> higher in medium B than in medium A.
Question 3. The bending of light that make matter APPEAR to change shape or size
  1.    reflect
  2.    refract
  3.    disperse
  4.    echo
 Discuss Question
Answer: Option B. -> refract
Question 4. When light travels from an optically denser medium to a rarer medium
  1.    it bends away from the normal.
  2.    it bends towards the normal.
  3.    it is undeviated.
  4.    it is laterally displaced.
 Discuss Question
Answer: Option A. -> it bends away from the normal.
Question 5. What image does the convex lens formsVirtual, erect and dimnished
  1.    False
  2.    True
 Discuss Question
Answer: Option B. -> True
Question 6. The broad wavelength range of visible spectrum is-The broad wavelength range of visible spectrum is
  1.    (10000-20000) A
  2.    (2000-4000) A
  3.    (4000-7000) A
  4.    None of these
 Discuss Question
Answer: Option C. -> (4000-7000) A
Question 7. According to Willebord Snell, light passing from air to glass will cause the light to
  1.    maintain its original speed 
  2.    accelerate while it is in glass
  3.    increase its speed
  4.    reduce its speed
 Discuss Question
Answer: Option D. -> reduce its speed
Question 8. What is being blocked when a shadow is formed?
  1.    Light Source
  2.    Light Path
  3.    Object
  4.    Eye
 Discuss Question
Answer: Option B. -> Light Path
Question 9. Which of the following natural phenomenons occur due to light dispersion
 Discuss Question
Answer: Option B. -> Light Path
Question 10. How many components of white light?
  1.    5
  2.    6
  3.    7
  4.    8
 Discuss Question
Answer: Option C. -> 7

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