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A lens has a focal length of 50 cm. If an object is placed at 100 cm, what type

Practice Questions

Q1
A lens has a focal length of 50 cm. If an object is placed at 100 cm, what type of image is formed?
  1. Real and inverted
  2. Virtual and erect
  3. Real and erect
  4. Virtual and inverted

Questions & Step-by-Step Solutions

A lens has a focal length of 50 cm. If an object is placed at 100 cm, what type of image is formed?
  • Step 1: Identify the focal length of the lens, which is given as 50 cm.
  • Step 2: Identify the object distance, which is given as 100 cm.
  • Step 3: Compare the object distance (100 cm) with the focal length (50 cm).
  • Step 4: Since the object distance (100 cm) is greater than the focal length (50 cm), we can conclude that a real image is formed.
  • Step 5: Remember that real images formed by lenses are also inverted.
  • Lens Formula – The relationship between object distance, image distance, and focal length in lens systems.
  • Image Characteristics – Understanding the nature of images formed by lenses, including whether they are real or virtual, and upright or inverted.
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