HW 4.2 - nguyen (jn9225) H04: EM Radiation mccord (50950)...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
nguyen (jn9225) – H04: EM Radiation – mccord – (50950) 1 This print-out should have 16 questions. Multiple-choice questions may continue on the next column or page – fnd all choices beFore answering. 001 10.0 points What is the Frequency oF light with a wave- length oF 4.0 × 10 - 7 m? 1. 3 . 0 × 10 - 14 s - 1 2. 3 . 0 × 10 14 s - 1 3. 120 s - 1 4. 1 . 3 × 10 - 15 s - 1 5. 7 . 5 × 10 14 s - 1 correct Explanation: 002 10.0 points What is the correct order oF decreasing Fre- quency? 1. inFrared radiation, radio waves, visible light, ultraviolet radiation 2. visible light, ultraviolet radiation, in- Frared radiation, radio waves 3. radio waves, inFrared radiation, visible light, ultraviolet radiation 4. ultraviolet radiation, visible light, in- Frared radiation, radio waves correct 5. radio waves, visible light, ultraviolet radi- ation, inFrared radiation Explanation: ultraviolet radiation > visible light > inFrared radiation > radio waves 003 (part 1 of 2) 10.0 points Light with a Frequency oF 7 . 17 × 10 14 Hz lies in the violet region oF the visible spectrum. What is the wavelength oF this Frequency oF light? Correct answer: 418 . 41 nm. Explanation: ν = 7 . 17 × 10 14 Hz c = 3 × 10 8 m / s c = λ ν λ = c ν = 3 × 10 8 m / s 7 . 17 × 10 14 s - 1 = 4 . 1841 × 10 - 7 m · 10 9 nm 1 m = 418 . 41 nm 004 (part 2 of 2) 10.0 points When an electron beam strikes a block oF copper, x-rays oF Frequency 2 . 06 × 10 19 Hz are emitted. What is the wavelength oF these x-rays? Correct answer: 14
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 4

HW 4.2 - nguyen (jn9225) H04: EM Radiation mccord (50950)...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online