Advertisements
Advertisements
प्रश्न
Name the radiations of wavelength just shorter than 4 × 10-7 m.
उत्तर
Ultraviolet radiations are shorter than 4 × 10-7 m = `(4 xx 10^-7)/(10^-10) = 4000` Å
APPEARS IN
संबंधित प्रश्न
What role dose infra-red radiation play in physical therapy?
What physical quantity is the same for X-rays of wavelength 10−10 m, red light of wavelength 6800 Å and radiowaves of wavelength 500 m?
Name the electromagnetic radiations used for (a) water purification, and (b) eye surgery.
What is the range of the wavelength of the following electromagnetic waves?
(a) Infrared.
Answer the following question.
Gamma rays and radio waves travel with the same velocity in free space. Distinguish between them in terms of their origin and the main application.
Name the radiations used for the detection of fracture in bones.
Answer briefly.
What are radio waves?
Answer briefly.
Give two uses of radio waves.
Name the electromagnetic radiation that has been used in obtaining the image below.
Name two electromagnetic waves of wavelength smaller than that of violet light.
