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From the top of a tower of height h meters the angle of depression of..
From the top of a tower of height h meters the angle of depression of a red car is φ ° and the angle of depression of a blue car which is on the opposite side of the tower is θ °. If the distance between the foot of the tower and the red car is y mete..
Optical Properties (Tyndall Effect)
When a strong beam of light is passed through a colloidal solution, the path of the light becomes visible when viewed from a direction at right angle to that of the incident light. This occurs because the colloidal particles absorb light energy and then scatter it in all directions. The p..
Summary (Contd…)
. The wavelengths absorbed appear as dark lines or bands on a bright background. According to Kirchhoff's law an element can absorb only those wavelengths from continuous light, which it emits at the same temperature. This law was used to study structure of the Sun when Fraunhoffer explained existe..
Summary (Contd…)
. The wavelengths absorbed appear as dark lines or bands on a bright background. According to Kirchhoff's law an element can absorb only those wavelengths from continuous light, which it emits at the same temperature. This law was used to study structure of the Sun when Fraunhoffer explained existe..
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