Ultraviolet light rays can be harmful and helpful to humans. O True O False

Q: The chemist, Schrödinger, has the following major contribution. (A) An electric current produces new…

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Q: The longest wavelength radiation is: a. Infrared b. (UV) ultraviolet light c. Gamma d. Microwave e.…

A: The energy of the radiation is quantized. The smallest unit of energy of the radiation is known as…

Q: What happens in the process of fluorescence? a. water molecules are broken up into hydrogen and…

A: Fluorescence is the phenomenon in which emmision of light takes place by absorbed light or…

Q: Tides are caused mainly by O Wind O The gravity of the Moon O Magnetic fields O Storms

A: The rise and fall of the water level of the sea are known as tides.

Q: Of the following listed four types of electromagnetic radiation, which one has the lowest…

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Q: MCQ 19: Particular element posses the same number of electrons hence have the same A. chemical…

A: Interpretation -  For a particular element posses the same number of electron then having the which…

Q: Heat is radiated from Earth to space predominately in the form of A. infrared radiation. B.…

A: Heat, energy transmitted by difference in temperature from one body to another. When two bodies are…

Q: Most of the energy applied to an X ray tube is converted into: O X rays O Light O Heat O Utraviolet…

A: X-ray tube is evacuated electron tube that produces x-rays along with the other types of energy.

Q: Which of the following statements about the sample is NOT correct? O The sample absorbs wavelengths…

A: Solution: 1.for first image We can see the solution absorbs red(700 nm), orange (600 nm) and green…

Q: Visible light is the only part of the spectrum that humans CAN see. O True O False

A: Visible light spectrum is a segment of an electromagnetic spectrum. It has wavelengths from 380 to…

Q: The wavelength of a particular color of yellow light is 593 nm. The frequency of this color is…

A: The relationship between wavelength and frequency of light is given by   f X λ  = c  where f =…

Q: which Atom is the smallest A) carbon B) silicon C) phosphorus D)Nitrogen

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Q: What electromagnetic radiations are considered to be dangerous with a lot of exposure and why?

A: Electromagnetic radiation are the radiations which travel in waves with both electric and magnetic…

Q: What wavelength of light would you report in units of nm, if the light had a wavelength of 7.60 ×…

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Q: How does Planck's idea of quantization explain how light is emitted by an atom?

A: Max Planck postulated that energy was quantized and could be emitted or absorbed only in integral…

Q: what is X-Ray ? what is use of it?

A: X-ray is an electromagnetic radiation having wavelength between 0.01 to 10 nm. They are produced…

Q: A surrounds all moving charged particles. O a O b magnet electric current magnetic field

A: The solution is given below -

Q: Calculate the relative atomic mass of carbon, taking the relative atomic mass of 13C to be 13.003354…

A: Relative atomic mass  is the ratio of average atomic mass to the mass of C-12 atom in the give…

Q: A VHF television station assigned to channel 22 transmits its signal using radio waves with a…

A: Wavelength = 577.22 mm

Q: Gamma rays contain the least amount of energy out of all the waves. O True O False

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Q: 60. Which one of the following provides evidence for the existence of atomic energy levels? A. The…

A: Evidence of existence of atomic energy levels depend Bohr model.

Q: Give the number of protons, neutrons, and electrons in each element: (a) silver-115; (b) 197Au; (c)…

A: General representation of an element : XZA  Z = atomic number = number of protons  Number of protons…

Q: When a salt containing copper ions is analyzed by a flame test, a green flame is observed. Which of…

A: Copper (Cu) is a chemical element belonging to the transition metals. The atomic no. (Z) of Cu is 29…

Q: A block of carbon is broken down into small pieces. Each piece of carbon is a different kind of atom…

A: If A block of pure substance or element, is broken down then the chemical property will be not…

Q: Scientists have observed dark lines or gaps (see image) in the solar spectrum of color coming from…

A: Dark light means certain wavelength are missing due to absorption of light. So they do not appear in…

Q: Fill in the blanks: Choose the correct answer from the given choices:

A: Solute: It is the substance that is getting dissolved in a particular liquid called the solvent.…

Q: Humans have three types of cone cells in their eyes, which are responsible for color vision. Each…

A: Given that -  Wavelength of particular cone cell absorbed = 513 nm    Then, from following formula -…

Q: 2) A sample of atomic H gas, initially in the ground state, sequentially absorbs two photons at 1874…

A: The atomic hydrogen absorbs 1874 nm wavelength radiation. Let's say that the e- will transit from…

Q: What happens in the process of fluorescence?     water molecules are broken up into hydrogen and…

A: An atom has different energy levels. They are electronic energy levels, vibrational energy levels,…

Q: Which scientist showed that white light can be separated into different colors using a prism? O…

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Q: The most energetic photons are gamma rays. True False

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Q: Which of the following regions of the electromagnetic spectrum has the highest frequency а. X-ray b.…

A: The electromagnetic spectrum contains rder of rays which are arranged in increasing order of their…

Q: X-rays have a wavelength small enough to image individual atoms, but are challenging to detect…

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Q: Electromagnetic frequency can be in the form of light AND sound. O True O False

A: Electromagnetic radiations exhibit both wave nature and particle nature. wave nature can be…

Q: 3) Which of the following has the highest frequency? A) X rays B) UV light C) microwaves 4) Elements…

A: Frequency of a wave is the number of complete waves passing through a point in one second.

Q: Be sure to answer all parts. An FM station broadcasts classical music at 91.9 MHz (megahertz, or 106…

A: 1 MHz is equivalent to 106 Hz. 91.9 MHz is equivalent to 9.19 × 107 Hz. The relationship between…

Q: a. Caffeine absorbs light along the visible region of the electromagnetic spectrum.   True  False

A: (a) Caffeine absorbs radiation with a wavelength around 260nm. answer: false

Q: Red visible light has a wavelength of 6.5 x 10^-7 m. What is the frequency in s^-1

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Q: Gray = C; white = H; red = 0; blue = N; dark green = Cl; brown= Br; light green = F; purple = I;…

A: Chiral atom :- A chiral atom in a molecule is bounded to four different chemical species. We can…

Q: Glass is a material that allows almost all the light to travel through and form a clear image. O…

A: Glasses are generally of two types- transparent , and translucent.

Q: Archeologists discover a gold crown in an ancient tomb. When they place the crown in a tub of water…

A: Given: Volume of water displaced by crown = 941.2 ml Density of gold = 19.3 g/ml Price of gold = $…

Q: X-rays have a wavelength small enough to image individual atoms but are challenging to detect…

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Q: The brightest object in the sky is what? A. The Sun B. The Moon C. Venus D. Mars

A: Of course, the star that appears the brightest to all of us on Earth is the Sun.

Q: Which is true of the electromagnetic radiation, incident on the earth?

A: Electromagnetic radiations are the energy that is propagated through free space or through a…

Q: The wavelength of a particular color of red light is 666 nr The frequency of this color is sec! (1…

A: Given, Wavelength = 666 nm  Frequency = ?

Q: FM-95, an FM radio station, broadcasts at a frequency of 9.51 x 107 s-1(95.1 MHz). What is the…

A: Since we known that -  Velocity of light / wavelenth = frequency using this concept we will solve…

Q: An FM radio station broadcasts news at 98.0 MHz. What is the frequency of this FM radio wave in…

A: The answer to the following question is given as -

Q: 1. The frequency of radio wave radiation is X-ray radiation.

A: X rays and radio waves are important electromagnetic radiations. The major differences between the…

Q: true or false Ultraviolet radiation is harmful with no benefits

A: The ozone layer protects the earth from harmful ultraviolet radiation. Ozone molecule combines with…

Q: Infrared radiation is higher in energy than UV radiation. True O False

A: