Lenses (Concave and Convex)Practice Questions & MCQs
Practice Lenses (Concave and Convex) questions from Light - Reflection and Refraction (Class 10 Science) - important MCQs with answers and step-by-step solutions. Solve the sample questions below, then practice the full set free on the RankByte app.
Lenses (Concave and Convex)Quiz - Solve & Score
Q1. Which of the following lenses would you prefer to use while reading small letters found in a dictionary?
- A.A convex lens of focal length 50 cm
- B.A concave lens of focal length 50 cm
- C.A convex lens of focal length 5 cm
- D.A concave lens of focal length 5 cm
Answer: C. A convex lens of focal length 5 cm
Eliminate first - option A) 'A convex lens of focal length 50 cm' fails since This lens is too weak for reading small letters; option B) 'A concave lens of focal length 50 cm' fails since This lens is too weak for reading small letters; option D) 'A concave lens of focal length 5 cm' misses the point - This lens is too weak for reading small letters. That leaves only option C). Confirm with the chapter rule: A convex lens of focal length 5 cm (physics, chapter 'Light - Reflection and Refraction'). Answer: C) A convex lens of focal length 5 cm.
Q2. Which lens is used in a simple microscope?
- A.concave lens
- B.concave mirror
- C.plane glass
- D.convex lens
Answer: D. convex lens
Q3. Where does the principal focus of a convex mirror lie?
- A.Behind the mirror (it is a virtual focus)
- B.In front of the mirror
- C.At the pole of the mirror
- D.At the centre of curvature
Answer: A. Behind the mirror (it is a virtual focus)
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Where can I practise Lenses (Concave and Convex) questions for Class 10 Science?
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Are these Lenses (Concave and Convex) questions important for the exam?
Yes. These Lenses (Concave and Convex) important questions follow the Science exam pattern (CBSE Boards, plus JEE and NEET foundation), so they help with both school and competitive prep.
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