Revision Questions: Physics and Chemistry PDF

## Conditions for total internal reflection of light: - Light should travel from a denser medium to a rarer medium. - Critical angle should be greater than 90 degrees. ## What is rate of reaction? - Rate of reaction is also known as reaction rate. - It is defined as the change in concentration...

## Conditions for total internal reflection of light: - Light should travel from a denser medium to a rarer medium. - Critical angle should be greater than 90 degrees. ## What is rate of reaction? - Rate of reaction is also known as reaction rate. - It is defined as the change in concentration of reactant and product w.r.t. time. ## What do you mean by refractive index? - Refractive index is also known as refraction index or index of refraction. - It is defined as the ratio of the speed of light in a vacuum to its speed in a specific medium ## How alcohol is formed? - By hydrolysis of haloalkanes with water or hot alkali. - Chemical reaction: R-X + OH → R-OH + X' ## Write the unit and dimension of permittivity - Unit of permittivity is Farad per meter (Fm-1). - Dimension of permittivity is [MLT^-2A^-2]. ## What is doping? - The process of mixing suitable impurities in pure semiconductor is known as doping. ## Convert 18 into a binary number. 18 in binary is (10010)₂ ## Define a rectifier. - A device which converts AC into DC is known as rectifier. ## Write functional formula of carboxylic acid, alcohol and ether. - Carboxylic acid - COOH - Alcohol - -OH - Either - -O- ## Write IUPAC name of HCOOH - Formic acid or methanoic acid. ## If critical angle is 45 degrees than find refractive index of that medium. - μ = 1/sinC - μ = 1/sin(45) - μ = 1/√2 - μ = √2/2 ## Obtain refractive index of a prism: - Here, i+e = δm+A - For minimum deviation of light, δ₁ = δ₂ = δ - i = e - From equation(1), r₁ + r₂ = A - 2r = A - r = A/2 - From equation (2), i +e = δm+A - 2i = δm+A - i = (δm+A)/2 - From Snell's law, μ = sinr/sini - μ = sin(δm+A)/2 / sin(A/2)