Match the physical applications and everyday observations in List-I with their underlying governing physics principles in List-II, and select the correct matching combination.
- Spontaneous upward movement of ink through blotting paper and oil climbing a cotton lamp wickCapillary action driven by surface tension and adhesive intermolecular forces
- Apparent shift in the perceived pitch of a train whistle as it passes a stationary observerDoppler Effect arising from relative motion between source and receiver
- Silvering on the inner glass surfaces of a vacuum thermos flask to maintain liquid temperatureReflection of infrared thermal radiation to minimize energy transfer
- Operation of oceanographic SONAR systems to map seabed topography and locate submerged vesselsReflection and echo timing of high-frequency ultrasonic acoustic waves
Cevap
Spontaneous upward movement of ink matches Capillary action driven by surface tension; Apparent shift in train whistle pitch matches Doppler Effect; Silvering on vacuum thermos flask surfaces matches Reflection of infrared thermal radiation; and Operation of SONAR matches Reflection and echo timing of ultrasonic acoustic waves.
Each everyday observation is correctly paired with its underlying physical principle: capillary action drives fluid transport through porous media; relative wave source motion causes pitch shifts governed by the Doppler Effect; highly reflective silver coatings suppress thermal energy transfer by reflecting infrared radiation; and SONAR uses reflected ultrasonic acoustic waves for underwater object localization.
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Anahtar Kavram
Everyday Applications of Mechanics, Acoustics, and Thermal Physics Principles
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