WebMar 16, 2024 · Question 1 Page 168 - Chapter 10 Class 10 - Light - Reflection and Refraction (Term 1) ... Define the principal focus of a concave mirror. Answer The point … WebMar 30, 2024 · m = h'/h. We also have another formula for magnification in lenses. Magnification = v/u. where. v is image distance. u is object distance. Note: - If magnification (m) is positive, It means image formed is virtual …
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WebFeb 15, 2024 · Selina Solutions for Class 10. Selina Solutions for Class 10 Maths; ... Define main focus of convex lens. ... The principal focus of convex lens is a point at which the light rays travelling parallel to principal axis converge after passing through the lens. Convex lens have two focii at equal distance from optical centre of lens, each on ... WebThe definition of Focus is a central point, as of attraction, attention, or activity. See additional meanings and similar words. the crew 2 graphics update
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WebAug 9, 2024 · Properties of Light. → Electromagnetic wave, so does not require any medium to travel. → Light tends to travel in straight line. → Light has dual nature i.e. wave as well as particle. → Light casts shadow. → … WebFocus: The point of the principal axis at which the rays parallel to principal axis meet (concave mirror) or appear to meet (convex mirror) after reflection. Represented by F. Focal Length: The distance between the pole and the principal focus of a spherical mirror is called focal length. Represented by f. WebJul 13, 2024 · Answer: We know, v = c/n. Refractive index (n) of water is 1.333, whereas refractive index of kerosene is 1.44 and that of turpentine is 1.47. As refractive index of water is least, so speed of light in water is more than in kerosene and turpentine. Hence, light travels faster in water. Question 10. the crew 2 green dino