A diffraction grating is illuminated at normal incidence by monochromatic light with wavelength $5.30 \times 10^{-7}\,\text{m}$. The first order maximum appears at an angle of $15.4^{\circ}$ from the direction of the incident light. What is the angle between the first and second order diffraction maxima?
- A$7.6^{\circ}$
- B$15.4^{\circ}$
- C$16.7^{\circ}$
- D$32.0^{\circ}$