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  9. Q93

PPSC PCS 2018 · Question 93 of 97

While watching three-dimensional pictures we need to wear

Science & Tech

  1. AMagnifying glass
  2. BConvex glass
  3. CPolaroid glassCorrect
  4. DNone of the above

Answer: C. Polaroid glass

Explanation

Polaroid (polarized) glasses are worn to view 3-D pictures, filtering the two differently polarized images.

Source: https://cdn.mindspritesolutions.com/examrace/SPSC/Punjab-PSC/Punjab-PSC-Past-Papers/Punjab-Civil-Service-2018-Official-Paper-1-Part-1.pdf

← Q92View full paper (97 questions)Q94 →

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