Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NEET2003ChemistryStructure of AtomActual

The value of Planck's constant is 6.63 10⁻³⁴ Js . The velocity of light is 3.0 10^8 ~ms ⁻¹ . Which value is closest to the wavelength in nanometers of quantum of light with frequency of 8 10¹⁵ ~s ⁻¹ ?

Options

  1. A2 10⁻²⁵
  2. B5 10⁻¹⁸
  3. C4 10^1
  4. D3 10^7

Correct answer

C. 4 10^1

Step-by-step solution

aligned & c=v ; = c v & = 3 10^8 8 10¹⁵ =0.375 10⁻⁷ ~m & =0.375 10⁻⁷ 10^9 ~nm & =0.375 10^2 ~nm & =37.5 ~nm & 4 10 ~nm aligned

Practice Structure of Atom on Quantrex Academy →

More from Structure of Atom

Identify the pair of atoms of elements as isotones from the following. 2026Which of the following elements has an electronic configuration, [ Ar ] 4s^2 ? 2026Calculate the energy per mole of photons of red light with a wavelength 750 nm. [ h = 6.626 10⁻³⁴ Js, C = 3 10^8 m/s.] 2026Calculate the energy associated with an electron in the first orbit of hydrogen atom? 2026Find the wave number of the 4^ th line in the Lyman series of H spectrum. (R = Rydberg constant) 2026Calculate the de-Broglie wavelength of an electron having velocity 1000 ms ⁻¹ [ h = 6.626 10⁻³⁴ js , mass of an electron = 9.1 10⁻³¹ kg ] 2026How many total number of s and p electrons are respectively present in Cl ^- ? 2026Visible light has a wavelength of 700 nm. Calculate its frequency in hertz. 2026 Full Structure of Atom list All NEET PYQs