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A nanometre is equal to
Answer & Solution
Correct Answer:
Option
B
"Nano" is a prefix that means one billionth (1/1,000,000,000).
A nanometer (nm) is therefore one billionth of a meter.
We know that 1 meter (m) = 100 centimeters (cm).
So,
1 nanometer (nm) = (1/1,000,000,000) meter = (1/1,000,000,000) × 100 cm
This simplifies to:
1 nm = 100 / 1,000,000,000 cm = 1 / 10,000,000 cm
In scientific notation:
1 / 10,000,000 = 10⁻⁷
Therefore, 1 nanometer = 10⁻⁷ cm.
✔ Correct Answer: Option B – 10⁻⁷ cm
A nanometer (nm) is therefore one billionth of a meter.
We know that 1 meter (m) = 100 centimeters (cm).
So,
1 nanometer (nm) = (1/1,000,000,000) meter = (1/1,000,000,000) × 100 cm
This simplifies to:
1 nm = 100 / 1,000,000,000 cm = 1 / 10,000,000 cm
In scientific notation:
1 / 10,000,000 = 10⁻⁷
Therefore, 1 nanometer = 10⁻⁷ cm.
✔ Correct Answer: Option B – 10⁻⁷ cm
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