Have you ever thought that perhaps‚ the only colour in real life is white? White light is indeed the bearer of all colours. The colours we see are reflections bouncing off an object or are the light source itself. The light sources change and the colours with them. Colour is not a stable affair. Colour is light alone‚ but our experience is so direct that we trust our eye and believe that a colour is inherent to an object. Imagine living in a world where everything is white in colour! However‚
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Std. VIII - Subject: Physics Feb Class Worksheet– Topic: Reflection of Light Name:__________________Div.____ Roll No. ____ Date: ________ Reflection of Light – The return of light into the same medium after striking a surface is called reflection. Some terms related with reflection are – 1. Incident Ray - The light ray striking a reflecting surface is called the incident ray. 2. Reflected Ray – The light ray obtained after reflection from the surface in the same medium
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The Invisible Man by H.G. Wells is a science fiction classic written in 1897. The novel was first serialized in Pearson’s Weekly the same year it was published. Probably Wells’ third most well-known novel‚ after War of the Worlds and The Time Machine‚ The Invisible Man is famous more for its protagonist that its story – the bandage-clad figure of Griffin‚ complete with trench coat‚ hat and sunglasses‚ has stuck far better in the public consciousness than Wells’ actual story has. Griffin was a medical
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INTENSITY OF SUNLIGHT The Intensity of the sunlight is measured at different timings by using Lux Meter which measures the intensity of illumination. The Intensity of light is measured in Lux which is the S.I unit of measurement of intensity of illumination of a source. The results are tabulated in the Table 4 and plotted as shown in the Figure 7. Table 4 Intensity of Sunlight Time Intensity of Sunlight(LUX) 9.15AM 54900 11.15AM 73400 1.15AM 81000 3.15AM 64500 5.15AM 35100 Figure 7 Plot of Intensity
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SUGGESTED INVESTIGATORY PROJECTS CLASS XII 1 To study various factors on which the internal resistance/emf of a cell depends. 2. To study the variations‚ in current flowing‚ in a circuit containing a LDR‚ because of a variation. (a) in the power of the incandescent lamp‚ used to ‘illuminate’ the LDR. (Keeping all the lamps at a fixed distance). (b) in the distance of a incandescent lamp‚ (of fixed power)‚ used to ‘illuminate’ the LDR. 3. To find the refractive indices of (a) water (b) oil
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checkpointCHECKPOINT WORKSHEET ON LIGHT Q1. It is night-time and the desk lamp is on. Light shines onto the key. (a) (i) Draw one ray of light on the diagram to show the light shining from the lamp onto the key. Use a ruler. Put an arrow on the ray to show the direction of the light. 2 marks (ii) There is a patch of light on the wall. This light has been reflected from the key. Draw a reflected ray of light on the diagram. Use a ruler. 2 marks (b) There is a dark shadow on the table beside the
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Noise Barriers By: Daniel Dick In the studio‚ in any live performance‚ basically anywhere music is being played‚ how the music sounds is the most important thing. Sure‚ the way they artists are dressed might be cool to see‚ and sure‚ the way they strut around stage might grab your attention‚ but the way they sound is definitely the most important component of the performance or recording. Part of the sound that they produce that is so essential to artists is the noise barrier that they use
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Law of Refraction- by Aydar Z. Hypothesis: During investigation‚ student will calculate 2 sets of Angles of Incidence & Refraction. The Hypothesis is that 2 outer angles would have very similar values (1st angle of Incidence and 2nd angle of Refraction)‚ while 2 inner angles will also have similar values (2nd angle of Incidence and 1st angle of Refraction). This Hypothesis is based on earlier test investigations where outer angles were very similar in a range of 3 degrees and inner angles were very
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different ways. An example when it goes through a low density medium to a high density medium the angle of refraction decreases. With all the test done the angles of incident and reflection stayed the same. This is because with light what angle it approaches at is the angle the light will reflect back at. Also the angle of refraction depended on what the angle of incident and refraction were‚refraction is a dependent variable being the reason why the other angles matter. The first test was how light moves
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The Index of Refraction was similar in each given medium and among the three mediums. This is obvious because (for example) in water‚ the indexes are all within 1.3 and for all three of the mediums there is a small range of 1.3-1.5 for the Index of Refraction. A light ray travelling from air to water will refract towards the normal more than a light ray travelling from water to air would. A light ray travelling from air to vegetable oil will refract towards the normal more than a light ray travelling
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