CAIE A-Level Physics A2 22.4.2 The Appearance and Formation of Emission and Absorption Line Spectra Topic Practice

CourseCourseConceptConceptDocumentDocument

Question 1

[Maximum number: 4]

A beam of light consists of a continuous range of wavelengths from 420 nm to 740 nm . The light passes through a cloud of cool gas, as shown in Fig. 11.1.

Fig. 11.1

Fig. 11.1

The spectrum of the light emerging from the cloud of cool gas is viewed using a diffraction grating.
Explain why this spectrum contains a number of dark lines.

All question bank results loaded