What is the refractive index of diamond ?

Jul 8th, 2015
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Missouri State University
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Q. 1. What is the refractive index of diamond ? Q. 2. What is the refractive index of water ? Q. 3. Give the position and nature of image formed by a convex lens when the obj ect is placed at F. Q. 4. What is the SI unit of power of lens ? Q. 5. What is the power of a concave lens having focal length 0.6m? Q. 6. What is the velocity of light in vacuum? Q. 7. Comment on the refractive index of any medium. Q. 8. At what position will a concave mirror give a real, inverted image of same size as the object? Q. 9. Which kind of lens has positive power? Q. 10. Which colour is obtained at the top in a prism spectrum ?

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, .SEKOLAH JENIS KEBANGSAAN (TAMIL)SIMPANG LIMA, KLANG 2009UJIAN BULANAN OGOS 2009 5SCIENCE YEAR 5(1 HOUR 15 MINUTES)NAME :__________________ CLASS :______________SECTION A.Every question is followed by four options A,B, and D. Choose the correct answers.1. Which of the statement below is true about light?ILight can be reflectedIILight gives us energyIIILight travels in straight lineIVWe can hold lightA. I onlyB. I.,II and IIIC. I and IIID. III only2. How is a shadow is formed?A. Light travels in straight line.B. Light is reflected.C. Light is too strong.D. Light is blocked by an opague object.3. Which statement is not true?A. The shape of the shadow is the same as the shape of object.B. When a light sourceis blocked by an opague materials,no shadow will be produced.C. Not all objects are able to form shadows when they block the light.D. A shadow is formed when an opague materials blocks the light.4. An object that will form a shadow when its blocks the light is called?A. translucent C. opagueB. transparentD. transfer5. Read the information below. The ability of a mirror to reflect light is due to its.. A. R only C. R and T onlyB. R and S onlyD. R,S and T6. Which of the materials below can be reflect light?A. Brick wallB.

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