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When white wave passes by a semi-transparent solid, or liquid or gas, it's spectrum have certain dark lines or bands, such spectrum is known as absorption spectrum (of the substance by which light is passed).
(i) Substances in atomic state produce line absorption spectra. Polyatomic substances such as H2, CO2 and KMnO4 produce band absorption spectrum.
(ii) Absorption spectra of sodium vapor have two (yellow lines) wavelengths D1 (5890Å) and D2(5896 Å)
2-Point Source Interference Patterns The diagram below displays various two-point source interference patterns. The crests of each wave are denoted through a thick line althoug
How to calculate n factor of disproportion reaction? Total number of electron change divided by no. of moles of reactant This is conventional method Total electron chan
Peltier effect (J.C.A. Peltier; 1834) The change in temperature generated at a junction among two dissimilar metals or semiconductors while an electric current flow through the
Q. When a radar gun utter the pitch is 90 miles per hour at what point in the balls travel to home plate is the radar gun measuring the velocity? Answer:- The measu
The I beam weighs 0.6kN/m and supports the load which is P33 kN as shown. The distance from the load to point B is P34 m. Determine the vertical support reactions at A and B. (A
Q. What are the characteristics of laser beam? Characteristics of laser The laser beam (a) is monochromatic. (b) is coherent with the waves all exactly in phase with o
what is specific gravity
A 2400-kg satellite is in a circular orbit around a planet. The satellite travels with a constant speed of 6.67x10 3 m/s. What is the acceleration of the satellite? Determine the m
diagram of nicol prism
Heater Another form of heater can be made from an old oil tin. Iron wire is wrapped round a test tube and twisted to form a handle.
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