Question

7.
The frequency of wave of light 1.0x10 sec'. The wave length for this wave is
కాంతి తరంగ పౌనఃపున్యము 1.0x106 sec 'అయిన తరంగ దైర్యం.........​

Answer 1

Explanation:

If you note the units you are using, it becomes easier.

You have

1

s

, and oftentimes with wavelength, you want to convert to

nm

which is UV-Vis range (

200~700 nm

), and is often of spectral interest.

What you want to do is:

1

s

→

1

m

→

m

→

nm

Conversion factors are extremely useful, and one easy one to remember is the speed of light, which is about

3

×

10

8

m/s

.

1

1

s

⋅

s

m

=

m

And finally, we can convert to

nm

:

10

9

nm

=

1 m

→

conversion factor:

10

9

nm

1 m

m

⋅

10

9

nm

1

m

Thus, overall, you just have:

nm

=

1

1

s

⋅

s

3

×

10

8

m

⋅

10

9

nm

1

m

=

1

1

/

s

⋅

3

×

10

8

m

/

s

×

10

9

nm

1

m