A. Green
B. White
C. Blue
D. Black
Submitted by: Rizwan Ayub Saadi
Related Mcqs:
- A black body has the property to _____________ all the radiation entering it.
A. Exude
B. Reflect
C. Absorb
D. None of theseSubmitted by: Rizwan Ayub Saadi
- As the temperature of black body is raised the wavelength corresponding to maximum intensity________________?
A. shifts towards longer wavelength
B. shifts towards shorter wavelength
C. remain the same
D. shifts towards longer as well as shorter wavelengths - If we look at the floating piece of iceberg on the sea, approximately what fraction of it is visible above the seawater level?
A. 1/6th
B. 1/8th
C. 1/10th
D. None of theseSubmitted by: Nayab Idrees
- What is wavelength of visible spectrum?
A. 8500 – 9800 angstrom
B. 7800 – 8000 angstrom
C. 3900 – 7600 angstrom
D. 1300 – 3000 angstromSubmitted by: Engr Allah Wadhayo
- Which one of the following radiation possesses maximum penetrating power ?
A. X-rays
B. B-rays
C. γ-rays
D. All have the equal penetrating powe - If the wavelength of incident radiation is increased in photoemission then_________________?
A. The maximum kinetic energy of the photoelectrons increases
B. The minimum kinetic energy of the photoelectrons decreases
C. The minimum kinetic energy of the photoelectrons increases
D. The average kinetic energy of the photoelectrons decreases - Radiation with wavelength longer than red lights______________?
A. ultraviolet rays
B. X-rays
C. infra red radiation
D. visible radiation - Radiation produced from TV picture tube is_____________?
A. B-rays
B. X-rays
C. Far infrared
D. Infrared - UV radiation can be produced by______________?
A. Heating the filament
B. Electron excitation in the gas
C. Ionization of atoms
D. All the above - When the body moves with terminal velocity the acceleration in the body become_____________?
A. 0
B. Maximum
C. Variable
D. Infinite
The correct answer to the question: "A black body emitting all the radiation in the visible region appears________." is "White".
