A Light Beam from a 2

question 6

Multiple Choice

A light beam from a 2.1-mW He-Ne laser has a wavelength of 633 nm.How many photons does the laser emit in one second? (h = 6.626 × 10^-34 J • s,c = 3.00 × 10⁸ m/s)

• A) 6.7 × 10¹⁵
• B) 8.8 × 10¹⁵
• C) 1.1 × 10¹⁶
• D) 1.3 × 10¹⁶

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Definitions:

Research Efforts

Systematic investigations with the aim of establishing facts and reaching new conclusions.

Technological Determinism

The theory that technology is the principal factor driving societal changes and shaping human history.

Research Scientists

Professionals engaged in systematic investigation and study in various fields of science to acquire new knowledge and understanding.

Thomas Edison

An American inventor and entrepreneur known for his development of the electric light bulb, phonograph, and motion picture camera, among many other innovations.