The Distance Between the Ruled Lines on a Diffraction Grating

question 67

Multiple Choice

The distance between the ruled lines on a diffraction grating is 1,900 nm.The grating is illuminated at normal incidence with a parallel beam of white light in the 400 nm to 700 nm wavelength band.What is the angular width of the gap between the first order spectrum and the second order spectrum?

• A)3.3°
• B)4.3°
• C)5.3°
• D)6.3°
• E)2.3°

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Definitions:

Loam

A rich soil blend, containing a balance of silt, sand, and clay, along with organic matter.

Epiphytes

Plants that grow on other plants for physical support but do not derive nutrients from them, obtaining moisture and nutrients from the air, rain, and sometimes from debris accumulating around them.

Aerial Roots

Roots that are not buried in soil but instead hang in the air, found in certain plants, where they absorb moisture from the atmosphere and sometimes aid in attachment.

Soil PH

A measure of the acidity or alkalinity of soil, affecting nutrient availability, microbial activity, and plant growth.