Home Work 7 3/3/15‚ 9:30 AM Home Work 7 Due: 11:59pm on Monday‚ March 9‚ 2015 You will receive no credit for items you complete after the assignment is due. Grading Policy Problem 23.08 A solar cooker‚ really a concave mirror pointed at the Sun‚ focuses the Sun’s rays 19.3 cm in front of the mirror. Part A What is the radius of the spherical surface from which the mirror was made? Express your answer to three significant figures and include the appropriate units. ANSWER: r= Problem 23.09
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last 10 years question papers for chapter 11 (Calorimetric)‚ Chap 12(Thermionic Emission and Radioactivity). 2. Complete project work for 1st term and 2nd term. First term:- Draw ray diagram for the following:- a) Refraction through a glass slab. b) Refraction through a glass prism. c) Dispersion of white light and it recombination by a pair of prism. d) A pair of right angled isosceles prism being used as a
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Sample Paper – 2011 Class – X Subject – Science Time: 2 ½ Hrs General Instructions: I) ii) iii) iv) Maximum Marks: 60 The question paper comprises of two sections A and B. You are to attempt both the sections. The candidates are advised to attempt all the questions of Section A separately and Section B separately. All questions are compulsory. There is no overall choice. However‚ internal choice has been provided in two questions of five marks category in Section A and one question of 2 marks
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speed of light‚ either the frequency or the wavelength has to change. The results have shown equivalent values for both of the variables. Thus indicating and proving that the speed of light stays the same after being reflected off a surface. Refraction Refraction is the bending of light through a substance. Different substances bend light at different angles. White light is made up of a full spectrum of colors. Each color has a different wavelength‚ and bends at a different angle. This is the same
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interactions that waves may have. Reflection occurs when a wave bounces back after striking a barrier. Reflected sound waves are called echoes; reflected light waves allow us to see objects. Refraction is the bending of a wave as it passes at an angle from one medium to another. One common example of refraction of light waves is the broken pencil effect that can be observed when a pencil is placed in a glass of water. The pencil seems to be "broken" at the surface of the water as the light waves go
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(ii) Each question carries four marks. 6×4 = 24 M (11)What is Doppler Effect? Obtain an expression for the apparent frequency of sound guard when the source is in motion with respect to an observer at rest. (12)Explain polarization by refraction. (13)State Gauss’s law in electrostatics and explain its importance. (14)Derive an expression for the equivalent capacity when capacitors are connected in series. (15)State Kirchhoff’s law for an electrical network. Using these laws deduce the
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PRELIMINARY PHYSICS Syllabus Notes 2007 Andrew Harvey 1st Edition PRELIMINARY PHYSICS Syllabus Notes 2007 Andrew Harvey 1 st Edition Copyright © Andrew Harvey 2007 Preliminary Physics Past Paper Solutions by Andrew Harvey is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 2.5 Australia License. Based on a work at andrew.harvey4.googlepages.com. First Edition published November 2007. 2006 Edition first released June 2006‚ updated July 2007.
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| SCIENCE - FORM 2 | | The World Through Our Senses | | SENSORY ORGANS AND THEIR FUNCTIONS 1. Sensory organs are used to detect every changes in the environment. (a) Sensory organs are possessed by human and all animals. (b) Sensory organs allow the body to respond to the stimuli surroundings. Stimuli from the surroundings. Stimuli are changes that happen in the environment. (c) Sensory organs have receptors that receive the stimuli and then‚ send them as impulses to the
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= E= r= m= Longitudinal Wave Velocity Modulus of Elasticity Density Poisson’s Ratio 6. Shear Wave Velocity W here: Vs = E= r= m= G= Shear Wave Velocity Modulus of Elasticity Density Poisson’s Ratio Shear Modulus 7. Refraction - Snell’s Law: That is the ratio of sine of the angle to the respective wave velocities are proportional. Where: qI = qR = V1 = V2 = Angle of the Incident Wave Angle of the Reflected Wave Velocity of Incident Wave Velocity of Reflected
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REFRACTION THROUGH A LENS Lens: Lens is a transparent refracting medium bounded by two curved surface which are generally spherical. Types of lens: Generally there are two types of lens: 1. Convex lens: It is a lens which is thicker at the middle and thinner at the edges. It is also called converging lens as the light rays converges on passing through it at a point. Focal length of convex lens is taken as positive. 2. Concave lens: it is a lens which is thicker at the edges and thinner at the middle
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