List of top Physics Questions on Wavelength and Frequency asked in NEET (UG)

एक प्रगामी गुणावृत्ति (हार्मोनिक) तरंग के लिए \(y(x, t) = 2.0 \cos 2\pi(10t - 0.0080x + 0.35)\) है, जहाँ x और y, cm में हैं और t सेकण्ड में है। दोलन करती हुई इस तरंग के दो बिंदु, जो कि एक-दूसरे से 0.5 m की दूरी पर हैं, के बीच का कलांतर है: 
 

The power radiated by a black body is P and it radiates maximum energy at wavelength, λ0 . If the temperature of the black body is now changed so that it radiates maximum energy at wavelength \(\frac{3}{4}\lambda_0\), the power radiated by it becomes nP. The value of n is
A source of unknown frequency gives 4 beats/s, when sounded with a source of known frequency 250 Hz. The second harmonic of the source of unknown frequency gives five beats per second, when sounded with a source of frequency 513 Hz. The unknown frequency is