Physics
When number of turns in a coil is trippled, without any change in the length of coil, its self inductance becomes?

Nine times
Six times
One–third
Three times

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Physics
In the gamma decay of a nucleus

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

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