World Geography
The umbra is

None of these
the inner portion of the moon's shadow
both (a) and (b)
formed by tangents to the sun and moon

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World Geography
Which among the following statements is/are correct about impact crater?They are formed by the hypervelocity impact of a smaller bodyThe have similar composition like sinkholes, glacial cirques,etcSelect the correct code from the options given below:

Neither 1 & 2
Only 1
Only 2
Both 1 & 2

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