PHYSICS FORMULAS AND PRACTICE PROBLEMS

REFLECTION AT CURVED SURFACES & REFRACTION AT CURVED SURFACES: 1. Magnification : m = -v/u  or m=hi/ho 2. Mirror formula, 1/f = 1/u + 1/v 3. focal length f = R/2 4. Lens formula 1/f = 1/v - 1/u 5. Lens makers fomula :  1/f = (n-1) (1/R1 - 1/R2) 6. The relation between refractive indices of media, object distance, image distance, and radius of curvature is given by :                                      ...

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A QUICK REVISION - PHYSICAL SCIENCES

Are you ready? ........... I : REFLECTION and REFRACTION AT CURVED SURFACES  1. Predict, Which mirror is used as rear view mirror ?  2. What is the unit of the power of the lens? Define one dioptre. (adsbygoogle = window.adsbygoogle || []).push({}); 3. Suppose that a person is using a concave mirror for shaving, Where should he place his face in front of the mirror? 4. Explain the refraction of light at plane surface and curved surface? When a ray of light passes from a denser medium to rarer medium which angle...

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EXPERIMENTS IN PHYSICS AND CHEMISTRY

; EXPERIMENT 1:  (adsbygoogle = window.adsbygoogle || []).push({}); AIM: DEMONSTRATING CONVERGENT RAYS AND DIVERGENT RAYS (adsbygoogle = window.adsbygoogle || []).push({}); Materials required: Rubber foam piece, slipper sole, Pins Procedure: To understand convergent rays and divergent rays from mirror, we need to take a small piece of rubber foam and draw a straight line. Put the pins along the line drawn, and appears as straight...

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Balancing a Chemical Equation

How to balance a chemical equation? A chemical equation tells us the type of reaction between different reactants. Chemical equation gives the states of the reactants and products.  One can calculate the amount of products required for required amount of products. To balance a chemical equation, very interesting method is algebraic expression method. for example:  C3H8 + O2 -----> CO2  + H2O (adsbygoogle = window.adsbygoogle || []).push({}); The above reaction is to be balanced using algebraic expressions ...

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Stephen Hawking ....

Stephen William Hawking....great Mathematician, Physicist Prof. Stephen william Hawking was born on 8th Jan. 1942, in Oxford, England.  Stephen studied at St. Albans School.  Stephen was awarded Ph.D. titled "properties of Expanding Universe" in 1965.  Stephen William Hawking  was an English theoretical Physicist and Cosmlogist. (adsbygoogle = window.adsbygoogle || []).push({}); Important Concept from Stephen William Hawking....... 1. Hawking radiation: This is the black body radiation which is supposed...

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LENS & LENS MAKER'S FORMULA

What is a Lens? A transparent medium bounded by two surfaces, at least one of the surface should be a curved, is said to be a lens and it is said to be THIN LENS, When there is a small gap between the two surfaces or lenses where the thickness are much less and considered negligible in comparison to the radius of curvature. (adsbygoogle = window.adsbygoogle || []).push({}); LENS MAKER'S FORMULA: When a lens of refractive index n2 is placed in the medium of refractive index n1, and the radii of curvatures of lens are R1 and R2, then...

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