Light: Mirrors and Lenses — Practice Quiz
CBSE · Class 8 · Science
Try a 4-question quiz on Light: Mirrors and Lenses for CBSE Class 8 Science: tap an answer to check it and see why. 41 questions in the full chapter test.
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Quick Quiz: Light: Mirrors and Lenses
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What type of mirror curves inward like the inner surface of a spoon?
According to the laws of reflection, if the angle of incidence is 30°, what is the angle of reflection?
What type of lens is thicker at the middle compared to the edges?
What happens to parallel light rays when they hit a convex mirror?
Sample Questions
Which of the following are properties of images formed by convex mirrors?
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Always erect, Always diminished, Shows lateral inversion
Convex mirrors always form erect and diminished images regardless of the object's position. They also show lateral inversion like all mirrors. They never form inverted or enlarged images.
Where are concave mirrors commonly used?
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Torch reflectors, Car headlights, Dental mirrors
Concave mirrors are used in torch reflectors, car headlights, and dental mirrors because they can converge light and provide enlarged images when objects are close. Vehicle side mirrors and store security mirrors use convex mirrors.
A concave lens always forms which type of image?
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Erect and diminished
A concave lens always forms an erect and diminished image regardless of the object's position. The image appears smaller than the actual object and is upright.
Which of the following statements about the laws of reflection are correct?
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Angle of incidence equals angle of reflection, All rays lie in the same plane, Laws apply to all types of mirrors
The two laws of reflection state that: 1) angle of incidence equals angle of reflection, and 2) the incident ray, normal, and reflected ray all lie in the same plane. These laws apply to all mirrors, not just plane mirrors.
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Sources & Official References
- NCERT Official — ncert.nic.in
- CBSE Academic — cbseacademic.nic.in
- CBSE Official — cbse.gov.in
- National Education Policy 2020 — education.gov.in
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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