Question

The diameter of the corona virus is 0.000000120 m.Express the given number in standard form.​

Answer 1

Given:

Diameter of corona virus = 0.000000120 m

To Find:

The diameter in standard form.

Solution:

The given numerical problem can be solved by the following method.

The standard form of any number is expressed in terms of powers of 10 multiplied with a decimal number with atleast one number between 1 and 10 before the decimal point.

To convert the given decimal number into standard form, we first shift the decimal point.

On shifting 7 places to the right,

1.20 × 10-⁷ m

When we shift two more places,

120 × 10-⁹ m

This can be expressed in nanometre as

120 nm.

Hence, the standard form of the diameter is 1.20 × 10-⁷ m.