Define Absorption.

Q: Without stratospheric ozone (O3), harmful solar radiation would cause gene alterations. Ozone forms…

A: Bond energy, EC-Cl = 339 kJ/molBond energy, EO-O = 498 kJ/molAvogadro's number, NA = 6.023×1023…

Q: how infrared spectroscopy work?

A: Answer Infra red spectroscopy used infra red radiation to excite the molecules.

Q: Excited (ionized) clouds of hydrogen gas emit the visible Balmer wavelengths, which blend to produce…

A: In this problem, it is asking about the color.

Q: How can you test how well different surfaces emit radiation?

A: There are many ways to test how well different surfaces emit radiation and even measure them. We…

Q: ideas about the properties and absorption spectra

A: Properties of absorption spectra.

Q: Explain the production of continuous and characteristic spectra.

A: A continuous spectrum is produced when a source emits or absorbs radiation over a wide range of…

Q: Define absorption coefficient?

A: We know that, Absorption coefficient : When light passes through a given substance then the…

Q: Birds resting on high-voltage power lines are a common sight. The copper wire on which a bird stands…

A: We know resistance of a wire R=ρlA Where ? Is the resistivity of wire l = length of wire A = area…

Q: The variables velocity (v, in m.s-1), wavelength (A, in m) and frequency (f, in Hz) are related by…

A:

Q: How can a person detect infrared rays without an instrument?

A:

Q: For each light source, determine which part of the spectrum of visible light is predominant:…

A: For each light source, the part of the spectrum of visible light is predominant is as follows: These…

Q: Explain the difference between incandescent and fluorescent light sources

A: These two light sources work on completely different principles.  we know that when a substance is…

Q: Our sun's blackbody temperature is about 6000 K and its peak radiation occurs at a wavelength of…

A: We can apply Wien's law.

Q: State one harmful effect each of the (a) ultraviolet (b) infrared radiation

A: (a) Ultraviolet radiation results in sunburn, eye damage and alteration of skin’s immune system.

Q: A man is dragging a trunk up the loading ramp of a mover's truck. The ramp has a slope angle of…

A: Given data: Angle between ramp and force is θ=30.0o Inclination of ramp from surface is α=20.0o…

Q: Explain why ultraviolet waves are dangerous to the body?

A: Ultraviolet Waves / Radiations are the radiations which comes from the Sun. It means that Sun is the…

Q: When you look at a shirt and it is blue…. WHY IS IT BLUE? What is being absorbed and what is being…

A: What colour our eye see is the reflected colour which an object reflects. Rest of the colours are…

Q: Absorption Spectrum of PABA

A: Maximum wavelength is 265nm shown in graph

Q: How can infrared radiation be detected?

A: Infrared radiation is emitted by all living organisms in the form of heat . Although our eyes cannot…

Q: Why do farmers use Infrared lights and UV lights?

A: Why do farmers use Infrared lights and UV lights. Solution and explanation.

Q: How are Infrared and Visible photons different from one another?

A: Electromagnetic waves are the combination of oscillating electric and magnetic fields which are…

Q: Define field emission.

A: The field emission is defined as a process of emission of electrons from the surface of a metallic…

Q: Define transmitted pulse.

A: When a pulse travels through a medium, it will often reach the end of the medium and encounter an…

Q: Write a note on the intensity of spectral lines in UV spectroscopy.

A:

Q: Give two similarities between infrared and UV radiation

A: Similarities between infrared and UV radiation are: 1) Speed of both radiations are equal in vacuum…

Q: Describe why molecules produce peaks when they absorb infrared radiation. Give appropriate examples

A: The peak position change cause the actual frequency shift of a single absorption band or by…

Q: How to study the photoelectric effect quantitatively ?

A: The photoelectric effect is a phenomenon in which electrons are ejected from the surface of a metal…

Q: Why do you suppose ultraviolet rays from the sun are more damaging to the skin than visible light?

A: UV photons have the right energies to cause chemical changes. When UV light hits your skin, the DNA…