QUESTION BANK – LIGHT 01. How do we see the things in light? 02. Write the different properties of light? 03. What are the different optical phenomena that takes place due to light? 04. Deflection of light? 05. State laws of reflection of light? 06. What are the properties of the image formed by a plane mirror? 07. What are the two types of spherical mirrors? 08. What is a concave mirror and convex mirror? 09. Define the following of a spherical mirror?
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distribution on an aerofoil and its variation with incidence. Introduction: An aerofoil is the two-dimensional cross section of a wing‚ tail or helicopter rotor blade. The lift and pitching moment on an aerofoil is determined by the pressure distribution on it. The pressure distribution changes with the angle of incidence. Understanding the behaviour of aerofoils requires some understanding of the variation of the pressure distribution with incidence. Apparatus: This experiment uses a pressure
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T. 34. Refraction is a bending that occurs when a wave moves from one medium to another at an angle and changes speed. _________________________ F. 40. A wave bending as it passes a point of land is an example of refraction. ___diffraction______________________ 43. The __amplitude__________________ of a mechanical wave is a direct measure of its energy. Short Answer Use the diagram to answer each question. 61. What does the person transfer to the rope by pulling it up and down at point
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direction of a wave due to a change in its transmission medium. Due to change of medium‚ the phase velocity of the wave is changed but its frequency remains constant. This is most commonly observed when a wave passes from one medium to another at any angle other than 90° or 0°. Refraction of light is the most commonly observed phenomenon‚ When light travels from air into water‚ it slows down‚ causing it to change direction slightly. This change of direction is called refraction. When light enters a
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Therefore I made on a screen on the wall by using black paper and sticking it to the wall using tape and tack. I also had to make sure that the base of the tub of water was level. If it wasn’t level‚ this could have changed the angle of refraction thereby affecting the results. Therefore‚ using a spirit level‚ I ensure that the surface was level. In case it was‚ I would add small pieces of cardboard in order to ensure it was level. I stuck the mirror to the surface using tack otherwise
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bluff body skin friction drag is more than pressure drag. True/ false. Justify your answer. 2. Two identical airfoils are kept in identical flow conditions. The surface of one Airfoil is relatively more rough. This airfoil will have higher stalling angle than the other. True/ False. 3. 4. 5. Justify your answer. Maximum Marks : 100 Explain why induced drag of a finite wing is more than that of an infinite wing. What is the effect of Reynolds number on skin friction drag? Plot the variation of Thrust
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The aim of this experiment is to understand the non-linear aerodynamic characteristic of a slender wing-body (rocket shaped) by installing the slender wing-body inside the wing tunnel and run the wing tunnel at subsonic speed and changing the incidence angle of the slender from -14 to 28 degrees over period of time and record the lift and induced drag readings from a computer which is connected to the wind tunnel. Then the readings obtained from the computer attached to the wind tunnel will be converted
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‘O’-Level Physics 5059 Compulsory Definitions List V1 Term / Phrase Definition C1: Physical Quantities‚ Units and Measurement Scalar quantities Scalar quantities are physical quantities that have magnitude only. Vector quantities Vector quantities are physical quantities that have both magnitude and direction. C2: Kinematics Speed Speed is the rate of change of distance travelled. Velocity Velocity is the rate of change of displacement. Uniform acceleration Uniform acceleration is a constant rate
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different media so that the wavefront returns into the medium from which it originated. Common examples include the reflection of light‚ sound and water waves. The law of reflection says that for specular reflection the angle at which the wave is incident on the surface equals the angle at which it is reflected. Mirrors exhibit specular reflection. In acoustics‚ reflection causes echoes and is used in sonar. In geology‚ it is important in the study of seismic waves. Reflection is observed with surface
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propagation (perpendicular to the page). The transverse electric field can vibrate in any direction in the plane of the page with equal probability. (c)An equivalent representation of the unpolarized wave‚ as two waves linearly polarized at right angles to one another and with a random phase difference between them. MIT-MANIPAL BE-PHYSICS-POLARIZATION-2011-12 4 POLARIZING SHEETS Polaroid Polarizing material The polarizing direction is established during the manufacturing process. If E is
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