UPSC EPFO APFC 2023 · Question 51

Question 51 of the UPSC EPFO APFC Recruitment Test 2023 (General Studies) (2 July 2023). Try it first, then check your answer and the explanation in the practice app.

1. APFC 2023 · Q51 · General Science & Computers · Physics

   Two lenses of powers +2.0 D and –2.5 D are combined to make an optical instrument. The combination will

   1. act as a convex lens
   2. act as a concave lens
   3. act as a simple mirror
   4. not form any image

   +2.0 D और –2.5 D शक्तियों के दो लेंस संयोजित कर एक प्रकाशिक यंत्र बनाया गया है। यह संयोजन

   1. उत्तल लेंस की तरह कार्य करेगा
   2. अवतल लेंस की तरह कार्य करेगा
   3. साधारण दर्पण की तरह कार्य करेगा
   4. कोई प्रतिबिंब नहीं बनाएगा

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