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Subject :NSO    Class : Class 8

Earthquakes at two places A and B were measured by a seismograph which recorded the magnitude as 2 and 4. The magnitude of tremors and the destructive energy at A and B can be compared as

A Tremors at B are two times those at place A
B Tremors at B are four times those at place A
C Tremors at B are 100 times those at place A
D Tremors at B are 1000 times those at place A.


pls tell how to calculate

Ans 1:

Class : Class 8
Please refer to the Ncert Book, the answer option D is favoured there

Ans 2:

Class : Class 9

Ans 3:

Class : Class 8
1000

Ans 4:

Class : Class 8
C as the scale is 1:0.05

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