Q.11)-Every hot object emits
  • X-Rays
  • Visible light
  • Infrared Rays
  • Ultraviolet Rays
Q.12)-Which of the following is not true about X-rays?
  • How low penetrating power
  • Travel with the speed of light
  • Can be reflected or refracted
  • Can affect photographic plates
Q.13)-In which region of electromagnetic spectrum does the Lyman series of Hydrogen atom lie
  • Visible
  • Infrared
  • Ultraviolet
  • X-Ray
Q.14)-Which of these travels in glass with minimum velocity
  • Red Light
  • Violet Light
  • Green Light
  • Yellow Light
Q.15)-X-Rays are
  • Positively charged particles
  • Negatively charged particles
  • Neutral particles
  • None of these
Q.16)-The damage of the human body due to rediation is measured in
  • Rems
  • Roentgen
  • Curei
  • Rads
Q.17)-Transition ions absorb light in region
  • Infrared
  • Ultraviolet
  • Microwave
  • Visible
Q.18)-Green house effect is the heating up of the Earth's atmosphere which is due to
  • The Ultraviolet Rays
  • Gamma Rays
  • The infrared rays
  • X-Rays
Q.19)-Indicate the correct arrangement for electromagnetic radiation in order of their increasing wavelength
  • Microwave, Infrared, Visible, X-Rays
  • X-Rays, Visible, Infrared, Microwave
  • Visible, Infrared, Microwave, X-Rays
  • X-Rays, Infrared, Visible, Microwave
Q.20)-Which of the following supports particle nature of photons?
  • Diffraction
  • Polarization
  • Photoelectric Effect
  • Interference