C.V. Raman discovered the Raman effect in which year? MCQ with Answer and Explanation

Explanation:
Gamma rays are photons, electromagnetic waves with wavelengths shorter than X-rays, produced in nuclear transitions. No mass, no charge. Highly penetrating. Stopped by thick lead.

Explanation:
Thomas Alva Edison invented the practical incandescent light bulb in 1879.

Explanation:
Frequency (f) is defined as the number of complete oscillations or cycles a wave makes in one second (measured in Hertz). The Time period (T) is the time taken to complete one full oscillation (measured in seconds). They are inversely related: T = 1/f. If a wave has a frequency of 50 Hz, its period is 1/50 seconds.