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Direct the light reflected by the mirror on to a sheet of paper held close to the mirror. Move the sheet of paper back and forth gradually until you find on the paper sheet a bright, sharp spot of light. Hold the mirror and the paper in the same position for a few minutes.
- Ncert Solutions For Class 10 Science Chapter 10 Intext Questions
- Ncert Solutions For Class 10 Science Chapter 10 Textbook Chapter End Questions
- Ncert Solutions For Class 10 Science Chapter 10 Light Reflection and Refraction
Page Number: 168 Question 1 Define the principal focus of a concave mirror. Answer: The principal focus of a concave mirror is a point on its principal axis to which all the light rays which are parallel and close to the axis, converge after reflection from the concave mirror. Question 2 The radius of curvature of a spherical mirror is 20 cm. What ...
Question 1 Which one of the following materials cannot be used to make a lens ? (a) Water (b) Glass (c) Plastic (d) Clay Answer: (d) Clay Question 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 curvatur...
Reflection of light by curved surfaces; Images formed by spherical mirrors, center of curvature, principal axis, principal focus, focal length, mirror formula (Derivation not required), magnification. Refraction; laws of refraction, refractive index. Refraction of light by spherical lens; Image formed by spherical lenses; Lens formula (Derivation n...
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The speed of light in vacuum is 3 x 108 ms-1. Answer-. Refractive index of a medium (nm) = Speed of light in vacuum/Speed of light in the medium. Speed of light in vacuum (c) = 3 × 10 8 m/s. Refractive index of glass (ng) = 1.50. Speed of light in the glass (v) = Speed of light in vacuum/ Refractive index of glass.
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Jan 22, 2024 · CBSE Class 10 Science Notes Chapter 10 Light Reflection and Refraction. REFLECTION. Reflection of Light: The phenomenon of bouncing back of light into the same medium by the smooth surface is called reflection. Incident light: Light which falls on the surface is called incident light. Reflected light: Light which goes back after reflection is ...
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- Introduction to Light – Reflection & Refraction. In Class 10 Science Chapter 10 Light, the phenomena of reflection and refraction of light using the straight-line propagation of light are taught to students.
- Chapter Summary Video. Light: Definition. Light is a form of energy that enables us to see things. Light starts from a source and bounces off objects which are perceived by our eyes, and our brain processes this signal, which eventually enables us to see.
- Laws of Reflection. Light Incident on the Surface Separating Two Media. When light travels from one medium to another medium it either: gets absorbed (absorption)
- Spherical Mirrors. Spherical Mirror. Consider a hollow sphere with a very smooth and polished inside surface and an outer surface with a coating of mercury so that no light can come out.
Nov 17, 2023 · Fix the convex lens on the table. Now light a candle with matchstick and place it on one side of the lens. Turn off the lights to ensure that the room is dark. Take a sheet of paper and obtain the image of the candle on the sheet by moving it. Mark the positions of the candle, lens and image in this case.
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Jul 13, 2020 · 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.
