Question

PHYSICS
8.
400 nm can be written as
a) 400 x 10 m
b) 400 x 10 m
c) 400 x 10m
d) 400 x 10°​

Answer 1

Answer:

(d) 400 10 this is a answer

Answer 2

Given: The given quantity is 400nm.

To find: We have to convert it to the meter.

Solution:

• According to unit conversion, one meter is equal to 100 cm.
• One cm is equal to $10^{-7}$ nm.
• One meter is equal to 0.001 km.

We know that 1 meter is equal to $10^{-9}$ meter.

To convert 400nm to the meter we have to multiple $10^{-9}$ with 400nm.

By multiplying we get-

$400 \times {10}^{ - 9} m$

So, 400nm is equal to $400\times 10^{-9}$ meter.