Practice Focal length of spherical mirrors - 9.2.2 | 9. RAY OPTICS AND OPTICAL INSTRUMENTS | CBSE 12 Physics Part 2
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Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What is the relationship between focal length and radius of curvature in a concave mirror?

💡 Hint: Remember, the formula connects 'f' to 'R' directly.

Question 2

Easy

What type of image does a convex mirror form?

💡 Hint: Think about how light rays behave with a convex surface.

Practice 4 more questions and get performance evaluation

Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

What is the focal length formula for spherical mirrors?

  • f = R/2
  • f = 2R
  • f = R/4

💡 Hint: Recall the connection between focal length and radius.

Question 2

True or False: Concave mirrors always create virtual images.

  • True
  • False

💡 Hint: Think about where the object is placed relative to the focal point.

Solve and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

A convex mirror has a focal length of -20 cm. If an object is placed at a distance of 30 cm, calculate the image distance and describe the nature of the image formed.

💡 Hint: Remember that convex mirrors only produce virtual images.

Question 2

A concave mirror forms a real image of an object placed 15 cm from it. If the mirror's radius of curvature is 40 cm, determine the image distance and nature of the image.

💡 Hint: Real images are formed beyond the focal length.

Challenge and get performance evaluation