The process of splitting a heavy nucleus into lighter nuclei is MCQ with Answer and Explanation

Explanation:
Gamma rays highest frequency >10¹⁹ Hz, shortest wavelength. X-rays next. Radio lowest frequency. Frequency increases: Radio, microwave, IR, visible, UV, X-ray, gamma.

Explanation:
Water's high specific heat (4186 J/kg·K) means it absorbs/releases large heat with small temperature change. This stabilizes temperatures: in engines, water coolant absorbs heat without large ΔT; in organisms, it buffers against temperature fluctuations. Memory tip: 'High specific heat = thermal buffer; water moderates climate and body temperature'. This application question tests understanding of material properties, frequently appearing in competitive exams. Always link physical properties to real-world uses; competitive exams emphasize practical implications of physics concepts.

Explanation:
d = (v×t)/2 = (340×0.5)/2 = 170/2 = 85 m. Minimum distance for echo perception is about 17 m. Remember divide by 2 for one-way distance.