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CBSE Class 10 Science — Light: Reflection and Refraction Question Paper & Practice Test

25 syllabus-aligned questions on reflection, refraction, lenses, and mirrors. Preview 5 for free — sign up to generate, customize, and download the complete test as a printable PDF.

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CBSE Class 10 Science — Light: Reflection and Refraction
25-Question Practice Test · Mixed Difficulty · CBSE-Aligned
MCQ
Q1.
When an object is placed at infinity in front of a concave mirror, the image formed is:
A) Virtual, erect, and highly diminished
B) Real, inverted, and highly diminished, formed at the focus
C) Real, erect, and the same size as the object
D) Virtual, inverted, and enlarged
Correct Answer: B
Short Answer
Q2.
Define the power of a lens and state its SI unit. What does a negative value of power indicate about the lens?
Assertion-Reason
Q3.
Assertion (A): The refractive index of a denser medium with respect to a rarer medium is always greater than 1.
Reason (R): Light travels slower in a denser medium than in a rarer medium.

Choose the correct option:
A) Both A and R are true, and R is the correct explanation of A.
B) Both A and R are true, but R is not the correct explanation of A.
C) A is true but R is false.
D) A is false but R is true.
Conceptual
Q4.
Explain why a pencil partly immersed in water appears bent at the water surface. Name the phenomenon responsible.
Numerical
Q5.
An object 4 cm high is placed 30 cm from a convex lens of focal length 20 cm. Using the lens formula, find the position, size, and nature of the image formed.

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