Question

The radius the radius of earth is 6.4 × 10 power 6 metre the order of magnitude of earth radius is
(a) 4
(b) 7
(c) 5
(d) 8​

Answer 1

Answer:

7

Explanation:

the order of magnitude is power of 10 but there is a condition,

for x*10^ n

n will be it's magnitude only if

x>=√10/10 and

x<=√10

here x= 6.4 is greater than √10

so divide and multiply it by10

thus 0.6 4*10^7 we get

and order of magnitude=7