Lenses. Equation of Lenses. Image Formation of Lenses Practice Questions

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12.9Lenses. Equation of Lenses. Image Formation of Lenses

Physics Revision Questions for Lenses. Equation of Lenses. Image Formation of Lenses

1. The image produced by a converging lens is shown in the figure below.

Physics Tutorials: This image provides visual information for the physics tutorial Lenses. Equation of Lenses. Image Formation of Lenses

What are the image features if the object is on the left of the lens?

  1. Real, inverted and magnified
  2. Virtual, inverted and magnified
  3. Real, inverted and diminished
  4. Virtual, erect and magnified

Correct Answer: D

2. An object is placed 12 cm on the left of a diverging lens. If the image is produced 8 cm on the left of the lens, what is the height of the image if the object is 6 cm high?

  1. 4.0 cm
  2. 3.0 cm
  3. 2.5 cm
  4. 2.0 cm

Correct Answer: A

3. An optical system composed by a diverging lens and a plane mirror is shown in the figure below.

Physics Tutorials: This image provides visual information for the physics tutorial Lenses. Equation of Lenses. Image Formation of Lenses

How far from the plane mirror is the second image formed in it (the image formed by the first image produced in the lens) if the plane mirror is placed at the centre of curvature of the diverging lens? Express the result in terms of F.

  1. 2F/3 due left of the mirror
  2. 8F/3 due left of the mirror
  3. 2F due right of the mirror
  4. 8F/3 due right of the mirror

Correct Answer: D

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