Quiz  /  Electromagnetic Spectrum Class 10 MCQ Questions With Answers

  • 1. 
    What happens to the energy of a photon as the frequency of the wave increases?

  • The energy increases
  • The energy decreases
  • The energy stays the same

  • 2. 
    The visible light spectrum ranges between

  • radar waves and X-rays.
  • television waves and infrared rays.
  • infrared rays and ultraviolet rays.
  • ultraviolet rays and gamma rays.

  • 3. 
    Light in the form of a particle that has discrete amount of energy is called a

  • Charm
  • Photon
  • Exciton
  • Muon

  • 4. 
    ________ is an EM wave that has the LEAST energy.

  • radio
  • gamma rays
  • microwaves
  • visible light

  • 5. 
    A rainbow forms when white light separates into different colors during?

  • Absorption
  • Scattering
  • Refraction
  • Diffraction

  • 6. 
    Which of the following occurs as a light wave bends when it passes from one medium into another?

  • constructive interference
  • refraction
  • destructive interference
  • reflection

  • 7. 
    This type of EM wave can cause skin cancer.

  • microwaves
  • ultraviolet ray
  • radio
  • infrared

  • 8. 
    How are electromagnetic waves different from other waves?

  • They have very short wavelengths
  • They transmit energy instead of matter
  • They can travel through empty space
  • They can change direction by reflection

  • 9. 
    Which of the following has wavelengths longer than microwaves?

  • Infrared waves
  • Radio waves
  • Visible light

  • 10. 
    What is the reaction involved if the electron moves from position 1 to 2?

  • Light will be emitted
  • Light will be absorbed
  • The electron will become less excited
  • The electron will decrease a quantum

  • 11. 
    What is the energy of a quantum of light with a frequency of 7.39x1014Hz.(E=Hv)

  • 4.88x1019
  • 4.88x10-19
  • 2.22x1023
  • 2.22x10-23

  • 12. 
    A certain photon of light has a wavelength of 4.22x10-7nm. What is the frequency? (v=c/λ)

  • 7.11x1014 Hz
  • 7.11Hz
  • 1.41x10-15
  • -1.41x1015

  • 13. 
    According to the Bohr Model, electrons are only found in specific orbits around the nucleus called __________________________

  • Energy Levels
  • Electron Lanes
  • Electron Places
  • Atomic Mass

  • 14. 
    Which has the LONGEST wavelength and, therefore, the lowest frequency/energy

  • Gamma Rays
  • Radio Waves
  • Visible Light
  • Infrared rays

  • 15. 
    Certain blue lights have a frequencey of 6.91x1014Hz. What is the wavelength? (λ=c/v)

  • 4.34x1021
  • 4.34x10-21
  • 4.34x10-7
  • 2.07x1023

  • 16. 
    The distance between two crests or two troughs of a wave is called:

  • frequency
  • amplitud
  • wavelength
  • hertz

  • 17. 
    Which of the following part of the electromagnetic spectrum has the highest frequency?

  • Infrared
  • Ultraviolet
  • Red in the visible light spectrum
  • Violet in the visible light spectrum

  • 18. 
    In which state does an electron have the least amount of energy?

  • Excited state
  • Ground state
  • Orbital
  • Bohr model

  • 19. 
    What is the wavelength for a quantum of light with energy of 7.56x10-19J? (λ=hc/E)

  • 2.62x10-7m
  • 2.62x107m
  • 2.64x10-45m
  • 2.64x1045m

  • 20. 
    A wave with a large wavelength will have a ______ frequency and _____ energy

  • high, low
  • high, high
  • low, high
  • low, low

  • 21. 
    What is a photon?

  • When radiation burst through electric waves
  • The emission of electrons from a metal caused by light striking the metal
  • The rate at which a waves energy flows through a given unit of area.
  • packets of electromagnetic energy

  • 22. 
    High frequency waves have _________ wavelengths.

  • varying
  • long
  • the same
  • short

  • 23. 
    If the energy of an EM wave is directly proportional to its frequency, which of the following has the highest energy?

  • Radio
  • Microwave
  • Infrared
  • Visible light

  • 24. 
    When atoms _____________ energy, their electrons move to higher energy levels. These electrons _____________ energy by emitting light when they return to lower energy levels.

  • lose, absorb
  • absorb, lose
  • lose, lose
  • absorb, absorb

  • 25. 
    Which of the following is the least penetrating wave

  • gamma rays
  • UV rays
  • Infrared rays
  • X rays

  • 26. 
    Emission spectra emitted by an element (or compound) will produce ___ through a spectroscope.

  • bright lines
  • a continuous rainbow
  • dark lines
  • white light

  • 27. 
    Which section of the spectrum is the ONLY one we can see?

  • X-rays
  • Visible Light
  • Gamma Rays
  • Ultraviolet Rays
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