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होम › भौतिकी › Optics - Mirrors and Lenses

Optics - Mirrors and Lenses — Physics Questions & Practice

207 Optics - Mirrors and Lenses questions from Physics for competitive exams such as UPSC, Banking, SSC and Railway. Read the worked questions below, check every answer with an explanation, and track what you get wrong. का अभ्यास करें

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Optics - Mirrors and Lenses पर अभ्यास प्रश्न — उत्तर सहित

Try each question first, then open the answer. Explanations are included.

1. An object forms an image at a distance of 28 cm from a lens, while the object itself is placed at a distance of 8 cm from the lens. What is the magnification produced? (m = v/u)

  1. A3.5
  2. B3.32
  3. C5.5
  4. D3.395
उत्तर दिखाएँ

उत्तर: A

Magnification m = v/u = 28/8 = 3.5.

2. An object forms an image at a distance of 38 cm from a lens, while the object itself is placed at a distance of 6 cm from the lens. What is the magnification produced? (m = v/u)

  1. A4.333
  2. B7.168
  3. C6.333
  4. D5.969
उत्तर दिखाएँ

उत्तर: C

Magnification m = v/u = 38/6 = 6.333.

3. An object forms an image at a distance of 18 cm from a lens, while the object itself is placed at a distance of 2 cm from the lens. What is the magnification produced? (m = v/u)

  1. A9.421
  2. B9
  3. C8
  4. D7.828
उत्तर दिखाएँ

उत्तर: B

Magnification m = v/u = 18/2 = 9.

4. An object forms an image at a distance of 26 cm from a lens, while the object itself is placed at a distance of 4 cm from the lens. What is the magnification produced? (m = v/u)

  1. A16.5
  2. B6.5
  3. C5.93
  4. D7.365
उत्तर दिखाएँ

उत्तर: B

Magnification m = v/u = 26/4 = 6.5.

5. An object forms an image at a distance of 2 cm from a lens, while the object itself is placed at a distance of 14 cm from the lens. What is the magnification produced? (m = v/u)

  1. A0.012
  2. B0.143
  3. C0.177
  4. D10.143
उत्तर दिखाएँ

उत्तर: B

Magnification m = v/u = 2/14 = 0.143.

Optics - Mirrors and Lenses और प्रश्न हल करें

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