What is photometry?
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Explain the Fluorescence ?
What secondary color of light is produced by mixing the primary colors of red and blue?
Name the element which has the simplest absorption spectrum?
What happens when you travel across the dateline?
Explain the Sound ?
What are rectifiers used for?
How can the presence of an element in a distant star detected ?
Is their any rule in significant figures that maximum number of significant figures in a number are 5
What is the Boiling ?
What is black body and what are its characteristics? : quantum physics
Which particles/ rays do radioactive substances emit?
define rectilinear propagation of light?