Absorption Spectrum of PABA

Q: By using Einstein constants explain the active matter in laser

A: Active matter is the number of particles that can be excited into population inversion and can give…

Q: I3 1-Show with suitable diagram how the band theory distinguish between the different types of…

A: Distinguish between different material by band theory :   In materials all the atoms are close to…

Q: Which wave property was measured in Lab 6, Atomic Spectra? O Frequency Amplitude Wavelength Velocity

A: These lines are known as spectra, and they correspond to an element's fingerprint wavelengths (the…

Q: Order the following elements by increasing atomic radius according to what you expect from periodic…

A: In the periodic table as we move from left to right the atomic radius decreases.Arsenic(As)is a…

Q: Define photo electric effect

A: to explain : Photo electric effect

Q: zeeman effect on fine structure of atom?

A: Zeeman effect is the splitting of the atomic spectral lines in the presence of an external magnetic…

Q: The radiation emitted by the sun in wavelength - between 1=0.1 pm and 2=100 µm is called 1) Thermal…

A: Visible radiation has wavelength from 380 nm to 700 nm.  So,  this is incorrect option.

Q: 33. The dark lines in the absorption spectrum of an element corresponds to dark lines in its…

A: Dark lines in the absorption spectrum indicates that energy corresponding to these lines has been…

Q: Determine Vo in the network shown. 4 k2 14 k2 12 k 2 mA V.

A:

Q: What causes dust particles and tiny grains of soot to move with Brownian motion?

A: Dust particles and tiny grains of soot move with Brownian motion. The Brownian movement is the…

Q: Why is phosphorescence emission weak in most substances

A: Phosphorescence is the emission of light from a substance after it has been exposed to radiation and…

Q: Mr. Muscedere accelerates an ELECTRON from left to right so that it leaves the electric field with a…

A:

Q: The dye laser is pumped by ------ (14 ---to produce a population .inversion high current Free…

A: Dye lasers uses liquid chemicals to bring out the lasing action in different bandwidth of visible…

Q: State two similarities and two differences between optical atomic emission spectra and X-ray…

A: SIMILARITIES: 1) Both the spectrum has absorption spectra and emission spectra.  2) To form optical…

Q: Part A In a photoelectric-effect experiment, the maximum kinetic energy of electrons is 3.2 eV .…

A: According to Einstein's photoelectric equation Maximum kinetic energy = h (ν-ν₀)

Q: The atom in its natural state is electrically negative charged. True or false, justify your answer

A: The atom in its natural state is electrically negative charged. False statement. The positive…

Q: In a hydrogen atom, what color is the emission line observed when electrons drop from the fourth to…

A: The energy associated with the emission is as follows: ΔE=13.6 eV122-142ΔE=2.55 eV…

Q: The density of sodium is 0.97 g/cm3 Calculate its atom density

A: Given, The density of sodium is 0.97 gcm3 We know, Molar mass of sodium is 23.0 gmol  Avogadro…

Q: What element has the lightest atoms?

A: Hydrogen has the lightest atoms. Its atomic number is 1 and its atomic mass is 1.00794 amu. It has…

Q: In the sketch below, the two shaded regions have uniform magnetic fields directed out of the page.…

A:

Q: In 200 words per point, Explain benefits of the Moore's law

A: Moore's Law: according to which the number of transistors that can be packed into a given unit of…

Q: Suppose that, at time t, the position relative to the origin of a particle moving along a line is…

A: (A) The particle travels more than 4 meter in the first three second. displacement=Area under the…

Q: Differentiate stimulated and spontaneous emission. LEDs usually produce light of a specific color…

A: LED"s: When an electric current flows through a Light Emitting Diode (LED), a semiconductor device,…

Q: Neon works in two wavelengths, how do we control it and make it work in one wavelength?

A: Real neon lights consist of  glass tube filled with a small amount (low pressure) of neon gas. Neon…

Q: There are three vials, one contains a regular, one a phosphorescent, one a fluorescent dye of the…

A: Given  Three dyes one is regular one a phosphoroscent and the third one a fluroscent. We have to…

Q: 1: Desive the yelation A8= ncpIn)-nRL(P Ti Hint: use enthailpyrelation

A: Entropy: The change in the entropy is given by; ∆S=∆QT∆S=Heat absorbedAbsolute temperature

Q: why transmission of electrons occours at metal boundry during thermonic emission?

A: Thermionic emission is the emission of electrons by thermal energy. The Band Theory suggests two…

Q: Select the elements that are ranked correctly from largest to smallest first ionization energy. F,…

A: Option C is the right answer  F, Cl, Br, I

Q: is threshold easy to imitate? false or true

A: Questions based on false and true statement

The Bohr model

Students often get confused between Rutherford’s model and Bohr model of an atom. They interpret the postulates of both these models to be the same, which is incorrect. Rutherford’s model differs from Bohr’s model in the following ways: