Physics
A particle dropped from the top of a tower uniformly falls on ground at a distance which is equal to the height of tower. Which of the following paths will be traversed by the particle ?

Hyper–parabolic
Parabolic
Circle
Great circle

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Physics
In the gamma decay of a nucleus

The mass number of the nucleus changes whereas its atomic number does not change
Neither the mass number nor the atomic number of the nucleus changes
The mass number of the nucleus does not change whereas its atomic number changes
Both the mass number and the atomic number of the nucleus change

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