Question

Choose the incorrect statement.

(1) 1 nm = 10–9 m

(2) 1 pm = 10–12 m

(3) 1 mg = 10–3 kg

(4) Both (1) and (2)​

Answer 1

Explanation:

(3) 1 mg = 10-3 kg

is incorrect

because 1 mg = 10 -6 kg

Answer 2

The incorrect statement is option 3.

Let's check out the given options:

(1) 1nm = 10^(-9)m

This option is correct because 1 nanometer is equal to 10 raised to power -9 meters.

(2) 1pm = 10^(-12)m

This option is correct because 1 picometre is equal to 10 raised to power -12 meters.

(4) Both (1) and (2)

This option is correct because both options (1) and (2) are correct.

(3) 1 mg = 10^(-3)m

This option is incorrect because 1 mg is equal to 10 raised to power -6 meters and not 10 raised to power -3 meters.

Hence, this option is incorrect.

This is the final result. Option (3) 1 mg = 10^(-3) kg is incorrect.

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