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Inverse square law of illumination

Inverse square law of illumination : The intensity of illumination of a surface by a point source of light varies directly with the illuminating power...

Lenz’s law

Lenz's law : When a circuit and a magnetic field move with respect to each other, the direction of the induced current is such so...

LAWS OF THERMO-DYNAMICS

LAWS OF THERMO-DYNAMICS First law of thermo-dynamics : The heat produced in a mechanical work is in proportion to the work done. Must Read: LAWS OF CHEMICAL COMBINATION Laws...

Photo-electric effect

Photo-electric effect : It is the phenomenon of emission of electrons by substances when irradiated with light of a frequency greater than a certain minimum...

Law of reflection of light

Law of reflection of light : (i) The angle of reflection equals the angle of incidence, (ii) The incident ray, the reflected ray, and the...

Hook’s law

Hook's law : Within the limits of elasticity, the strain is proportional to the stress. The value of the stress at which a material ceases...

Distribution law of multiplication

Distribution law of multiplication : The multiplication of a compound expression by a factor is the sum of the partial products of each term of...

Law of combining weights

1.  Law of combining weights : Elements combine in the ratio of their combining weights or chemical equivalents; or in some simple multiple or sub-multiple...

Law of constant composition or proportion

1.   Law of constant composition or proportion : A definite chemical compound always contains the same elements chemically combined in the same proportions by weight. Must...

LAWS OF CHEMICAL COMBINATION

1.   Law of multiple proportions : When two elements combine in more than one proportion i.e. to form more than one compound there is always...

LAWS OF CHEMICAL COMBINATION 1

LAWS OF CHEMICAL COMBINATION 1.   Law of constant composition or proportion : A definite chemical compound always contains the same elements chemically combined in the same proportions by...

Laws of refraction of light

Laws of refraction of light : (i) A ray of light passing from a rarer medium into a denser medium is deviated towards the normal at...

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