NCERT Exercise (Part 1) - Light: Reflection And Refraction | Class 10 Physics 2022-23
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✅ In this video,
✔️ Class: 10th
✔️ Subject: Physics
✔️ Chapter: Light: Reflection And Refraction (Chapter 10)
✔️ Topic Name: NCERT Exercise (Part 1) - Light: Reflection And Refraction | Class 10 Physics Chapter 10 (2022-23)
✔️ Topics Covered In This Video (by Vibhuti Ma'am): This YouTube video investigates the science concepts of light reflection and refraction as presented in the Class 10 Science NCERT syllabus (2022-23). With the help of Vibhuti Mam, learn how to accurately address and solve related problems step-by-step. Get an in-depth understanding of the principles behind these topics and develop a thorough mastery of the associated material.
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00:00 Introduction: Light: Reflection And Refraction
00:03 Question 1 to 6: NCERT Exercise: Light: Reflection And Refraction
Question. 1. Define the principal focus of a concave mirror.
26:21 Website Overview
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Points covered in this video:-
NCERT Solutions -
Question. 1. Define the principal focus of a concave mirror.
Solution. Light rays that are parallel to the principal axis of a concave mirror converge at a specific point on its principal axis after reflecting from the mirror. This point is known as the principal focus of the concave mirror.
Question. 2. The radius of curvature of a spherical mirror is 20 cm. What is its focal length?
Solution. Radius of curvature, R = 20 cm
Radius of curvature of a spherical mirror = 2 x
Focal length (f)R = 2f
f = R/2 = 20/2 = 10
Hence, the focal length of the given spherical mirror is 10 cm.
Question. 3. Name a mirror that can give an erect and enlarged image of an object.
Solution. Concave Mirror
Question. 4. Why do we prefer a convex mirror as a rear-view mirror in vehicles?
Solution. We prefer a convex mirror as a rear - view mirror in vehicles because it gives a wider field of view which allows the driver to see most of the traffic behind him. Convex mirrors always form a virtual, erect, and diminished image of the objects placed in front of it.
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