A Diffraction Grating Is to Be Used to Find the Wavelength

question 41

Short Answer

A diffraction grating is to be used to find the wavelength of the emission spectrum of a gas. The grating spacing is not known, but light of a known wavelength of $632.8 \mathrm {~nm}$ is deflected by $43.2 ^ { \circ }$ in the second order by this grating. Light of the wavelength to be measured is deflected by $34.9 ^ { \circ }$ in the second order. What is the wavelength of the light that is to be measured?

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Definitions:

Absorption Costing

An accounting method that includes all manufacturing costs, both variable and fixed, in the cost of producing each unit of a product.

Variable Costing

An accounting method that only allocates variable costs to the inventory; fixed manufacturing overhead is expensed as incurred.

Cost Structure

The composition of a company's costs, both fixed and variable, that are incurred in the operation of its business.

Variable Costing

An accounting method that only considers variable costs - costs that change with production volume - in calculating the cost of goods sold.