Question

Red light has a wavelength of 7000 A. In μm it is​

Answer 1

Answer:

0.7 micrometer.

Hope it will help you.

Explanation:

Answer 2

Given: the wavelength of the red light, λ₁ = 7000°A

To Find: the wavelength of the red light, λ₂ in μm.

Solution:

To calculate λ₂, the concept used:

• Wavelength is measured in meters (m), which means the meter is the SI unit of the wavelength.
• It can also be measured in centimeters, millimeters, micrometers, and angstrom.
• Angstrom is denoted as "°A" and a micrometer is denoted as "μm".
• 1 °A = 10⁻¹⁰ m
• 1 μm = 10⁻⁶ m

Applying the above formula:

1 °A = 1 / 10000μm

      = 0.0001 μm

      = 10⁻⁴ μm

7000 °A = 10⁻⁴ x 7000

              = 7000 x 10⁻⁴

              = 7 x 10³ x 10⁻⁴

              = 7 x 10 ⁻¹

              = 7 / 10

              = 0.7 μm

7000 °A  = 0.7 μm

          λ₂  = 0.7 μm

Hence, the wavelength of 7000°A in μm is 0.7 μm or 7 x 10 ⁻¹μm.