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