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# Physic for A level & UTME

Simplifying physics for better understanding for students to excel in ‘A level’ and UTME

## Notes on quantization of energy

Max planck explained that energy from such bodies is emitted in separate or discrete packets of energy known as energy quanta or photo of amount hv where v is the frequency of radiation and he represents Planck’s constant, then energy by the equation E = nhf f       =        c/λ c …

## More solutions to some UTME past questions

Question 1 The energy of a photon having a wavelength of 10^-10m is{utme 2013} A. 1.7 x 10-12J     B. 2.0 x 10-15J            C. 1.7 x 10-13J                 D. 2.0 x 10-12J Solution E = hf = hc/λ h is the planck’s constant = 6.63 × 10–34 J s c is the …

## How to solve questions on simple machine and light waves for UTME

Question 1 A ray of light strikes a plane mirror at an angle of incidence of 35o. If the mirror is rotated through 10o, through what angle is the reflected ray rotated?{utme 2001} A. 45o          B. 20o              C. 70o                     D. 25o The reflected ray will rotate through the angle = …

## Notes on optics : light waves

Transmission of light Light can travel through a solid, liquid and gas or vacuum. Therefore, it does not need a maternal medium for its transmission. Types of object/substance 1          Opaque object: These are objects that do not allow light to pass through them, e. g wood, stone, table, wall, etc. …

## Notes on simple machine

MACHINES A machine is any device by means of which work can be done more conveniently. Mechanical Advantage (M.A.)   The M.A. of a machine is defined as the ratio of load to the effort Mechanical Advantage (M.A.) = load / effort Velocity Ratio (V.R.)  The velocity ratio V.R. of a …

## How to solve questions on Heat energy for UTME

Question 1 A 2000W electric heater is used to heat a metal object of mass 5kg initially at 10oC. If a temperature rise of 30oC is obtained after 10 min, the heat capacity of the material is{utme 2003} A. 6.0 x 104JoC-1             B. 4.0 x 104JoC-1             C. 1.2 x 104JoC-1                …

## Notes on conduction through liquid and gases

CONDUCTION THROUGH LIQUIDS Electrolysis: Is the chemical change in a liquid due to the flow of electric current. Electrolytes Are liquid that are good conductor of electricity. Non-electrolytes are liquid that are poor conductor of electricity. Application of Electrolysis Electroplating: Is the process of coating metals with another metal in …

## Notes on basics electronics for UTME

Conductors are substances that allow the passage of electricity through them. Insulation is a substance that will not permit the passage of electricity through them. Insulators are material that do not allow the passage of electricity through them. Semi conductors are materials having intermediate electrical conductivity between that of conductors …