The Red Line Observed in the Line Spectrum for Hydrogen

question 49

Multiple Choice

The red line observed in the line spectrum for hydrogen has a wavelength of 656 nm.What is the frequency of this light in hertz (s^-1) ?

• A)4.57 x 10⁵ s^-1
• B)4.57 x 10¹⁴ s^-1
• C)2.18 x 10^-6 s^-1
• D)2.18 x 10^-13 s^-1
• E)1.97 x 10² s^-1

---

Definitions:

Hydraulic Press

A device using hydraulic power to generate a compressive force, widely used in metal forming, moulding, and various industrial applications.

RSC System

Roll Stability Control system, an active safety feature designed to help prevent vehicle rollover by adjusting engine power and applying brakes to specific wheels.

Chassis Data Bus

A network within a vehicle that allows for the transfer of data between electronic control units and devices.

Driveline Retarder

A device used to reduce the speed of a vehicle by applying resistance to the driveline, aiding in braking.