A Laser Emits Light of Wavelength 463 Nm During a Brief

question 8

Multiple Choice

A laser emits light of wavelength 463 nm during a brief pulse that lasts for 25 ms and has a total energy of 1.2 J.How many photons are emitted in that single pulse? , h = 6.626 × 10^-34 J • s)

• A) 2.8 × 10¹⁸
• B) 6.9 × 10¹⁹
• C) 3.4 × 10¹⁹
• D) 1.1 × 10¹⁷
• E) 2.2 × 10¹⁷

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Definitions:

Tandem Drive

The typical two rear-axle drive system used in a three-axle highway tractor. The front axle on a typical highway tractor is the steer axle, while the tandem rear axles drive the truck.

Front Axle

The forward-most axle in a vehicle, often supporting the front part of the vehicle and, in many cases, incorporating steering mechanisms.

Bogie Centerline

The central longitudinal line that runs through the middle of a bogie, which is a wheel assembly found on trains or heavy land vehicles.