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Dec 7, 2022 · Light has the properties of waves. Like ocean waves, light waves have crests and troughs. The distance between one crest and the next, which is the same as the distance between one trough and the next, is called the wavelength. The frequency of a wave is the number of crests (or troughs) that pass a point in one second.
Aug 4, 2018 · 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. • Speed of light is maximum in vacuum. Its value is 3 × 10^8 m/s. • When light falls on a surface, following may happen :
Jan 22, 2024 · A ray of light parallel to the principal axis after reflection passes through the focus. (1) A ray of light passing through the focus after reflection becomes parallel to the principal axis. (2) A ray of light incident on the centre of curvature retraces its path after reflection form the mirror. 25. For mirrors, the following results hold :
Dec 12, 2023 · The speed of light is 3×10 8 m/s. Propagation of Light. Light always propagates in a straight line. Since light is an electromagnetic wave it can propagate even without a medium i.e. Light can propagate in vacuum also. Light is also a transverse wave, hence, it propagates in the manner of crest and trough.
1. Transparent Objects: all light travels through the substance. 2. Translucent Objects: some light is transmitted, some light is absorbed. 3. Opaque Objects: all light is absorbed. How is the colour of an object determined? Different colours of light have different wavelengths. The Subtractive Colour Theory states that the colours that are ...
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. Furthermore, optical phenomena in nature are examined. The reflection of light by spherical mirrors is discussed in the chapter so that their applications are studied in real-life situations.
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Hold a concave mirror in your hand and direct its reflecting surface towards the Sun. 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.
