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NCERT Solutions for Class 10 Science Chapter 10 Light Reflection and Refraction
NCERT Solutions for Class 10 Science Chapter 10 NCERT Solutions for Class 10 Science Chapter 10 Light Reflection and Refraction NCERT Questions Question 1: Define principal focus of a concave mirror. Answer: It is a point on the principal axis at which parallel rays of light travelling close to principal axis actually converge after reflection. Question 2: The radius of curvature of a spherical mirror is 20 cm. What is its focal length? Answer: Focal length = Radius of curvature / 2 = 20 / 2 = 10 cm. Question 3: Name a mirror that can given an erect and enlarged image of an object. Answer: Concave mirror. Question 4: Why do we prefer a convex mirror as a rear-view mirror in vehicles? Answer: This is because a convex mirror forms diminished and erect images. It also provides a wider view of the vehicle. Question 5: Find the focal length of a concave mirror whose radius of curvature is 32 cm. Answer: Focal length = Radius of curvature / 2 = 32 / 2 = 16 cm. Question 6: A concave mirror produces three…