Advertisements
Advertisements
प्रश्न
Assertion (A): Ultraviolet radiations is scattered more as compared to the microwave radiations.
Reason (R): Wavelength of ultraviolet radiation is more than the wavelength of microwave radiation.
विकल्प
Both A and Rare true.
A is true but R is false.
A is false but R is true.
Both A and Rare false.
Advertisements
उत्तर
A is true but R is false.
Explanation: Because UV radiation has shorter wavelengths than microwave radiation, it scatters more.
APPEARS IN
संबंधित प्रश्न
State Moseley's law
What is the range of the wavelength of the following electromagnetic waves?
(A) Radio waves.
Give the range of wavelength of the electromagnetic waves visible to us.
State the approximate range of wavelength associated with the ultraviolet rays.
The figure shows the intensity-wavelength relations of X-rays coming from two different Coolidge tubes. The solid curve represents the relation for the tube A in which the potential difference between the target and the filament is VA and the atomic number of the target material is ZA. These quantities are VB and ZB for the other tube. Then,
The Kβ X-rays from certain elements are given below. Draw a Moseley-type plot of √v versus Z for Kβ radiation.
| Element | Ne | P | Ca | Mn | Zn | Br |
| Energy (keV) | 0.858 | 2.14 | 4.02 | 6.51 | 9.57 | 13.3 |
Name the scientist who discovered Microwaves
Calculate the shortest wavelength of electromagnetic radiation present in Balmer series of hydrogen spectrum.
State two properties of infrared radiations which differ from visible light.
Answer briefly.
Name the most harmful radiation entering the Earth's atmosphere from outer space.
