Advertisements
Advertisements
प्रश्न
What is the speed of radio waves in vacuum?
Advertisements
उत्तर
3 × 108 ms-1
APPEARS IN
संबंधित प्रश्न
State the approximate range of wavelength associated with the ultraviolet rays.
For harder X-rays,
(a) the wavelength is higher
(b) the intensity is higher
(c) the frequency is higher
(d) the photon energy is higher.
Name three radiations and their wavelength range which are invisible and beyond the violet end of the visible spectrum.
Name any two electromagnetic waves which have a frequency higher than that of violet light. State one use of each.
State three properties of ultra-violet radiation similar to visible light.
Calculate the wavelength of a microwave of a frequency of 8.0 GHz.
SONAR emits which of the following waves?
Given below in the left column are different modes of communication using the kinds of waves given in the right column.
| A. | Optical Fibre Communication |
P. | Ultrasound |
| B. | Radar | Q. | Infrared Light |
| C. | Sonar | R. | Microwaves |
| D. | Mobile Phones | S. | Radio Waves |
From the options given below, find the most appropriate match between entries in the left and the right column.
Give any two uses of infrared waves.
What is the wavelength range of electromagnetic radiation used in radio broadcast?
