Explain the Optical Medium ?

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How many more times louder is 70 decibels than 10 decibels?

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For projectiles fired at identical speeds but various angles from the ground, neglecting air resistance and the curvature of the earth, at what angle will the maximumhorizontal distance be attained?

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How does the arrangement of atoms in most solids differ from the arrangement of atoms in a liquid?

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while climbing a hill we bend forward. give a scientific reason for the same

1 Answers   ABC,

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Explain planck’s hypothesis or what the postulates of planck’s quantum theory? (Or) what are the assumptions of quantum theory of black body radiation? : quantum physics

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Describe the Periscope?

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For what the parabolic dishes are used?

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Why does a heavy stone nor break a glass place when place slowly on it, while a small stone falling from a great height easily breaks it ?

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Define Penumbra ?

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What is the transparent?

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What is black body ?

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