PhysicsKund Physics class 9 to 12 NCERT, JEE - NEET

Notes Class 10 Science Chapter 9 Reflection and Refraction of Light - Physicskund Light and its nature. Type of Medium for the Propagation of Light. Reflection and Laws of Reflection. Reflection of Light by Mirror: Formation of Image in a Plane Mirror. Define - Centre of Curvature, Principal Axis, Principal Focus, Focal Length, Mirror. Images Formed by Concave Mirrors. Images Formed by Convex Mirrors. Use of Concave and Convex Mirror. Mirror Formula (Derivation Not Required), Magnification. Sign Convention for Spherical Mirrors. Definition of Refraction of Light | Important Terms Related to Refraction | Cause of Refraction . Optically Rarer and Denser Medium. Refraction, Laws of Refraction, Refractive Index. Refraction of Light by Spherical Lens. Image Formed by Convex Lens. Image Formed by Concave Lens. Sign Convention, Lens Formula, Magnification. Use of Convex and Concave Lens. Power of a Lens and Its Com...

NCERT Solutions For Class 10 Science physics chapter 9 Light Reflection and Refraction:  1. Which one of the following materials cannot be used to make a lens? (a) Water.    (b) Glass.   (c) Plastic.  (d) Clay Solution : (d) Clay 2. The image formed by a concave mirror is observed to be virtual, erect and larger than the object. Where should be the position of the object? (a) Between the principal focus and the centre of curvature. (b) At the centre of curvature (c) Beyond the centre of curvature (d) Between the pole of the mirror and its principal focus. Solution :   (d) Between the pole of the mirror and its principal focus. 3. Where should an object be placed in front of convex lens to get a real image of the size of the object? (a) At the principal focus of the lens. (b) At twice the focal length (c) At infinity (d) Between the optical centre of the lens and its principal focus. Solution :  (b) At twice the focal length. 4. A spherical mirror...