Question

The order of magnitude of a physical quantity equal to 4.0 x 10^7m/s


A)10
B)5
C)7
D)9​

Answer 1

Answer:

5, is answer

I hope it's help you

Answer 2

The correct answer is {c} 7

order of magnitude  expressed as the power of 10 with the numerical part or coefficient should be greater than 0.5 and less than or equal to 5. Then the power of 10 is usually called as the order of magnitude of that quantity. It can be any integer.

here, the coefficient is 4.0

i.e greater than 0.5 and less than or equal to 5

Hence, the power of 10 is 7

Therefore, the order of magnitude is 7.