Question

The concept of radio transmission was first demonstrated by the famous Indian scientist:

• A. J.C. Bose
• B. C.V. Raman
• C. Vikram Sarabai
• D. Homi. J. Baba

Answer 1

Answer:

A. J.C. Bose

• Light scattering depends on the wavelength of the light being scattered.
• Thus, limits to spatial scales of visibility arise, depending on the frequency of the incident lightwave and the physical dimension (or spatial scale) of the scattering center, which is typically in the form of some specific microstructural feature.
• However, short wavelengths have lower attenuation, and are thus used in long distance radio signals.