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MDCAT - DUHS Past Papers - Physics - Chap No 5 Quiz

Attempt 10 MCQs on MDCAT - DUHS Past Papers - Physics - Chap No 5 | Quiz 1

1. A sound travels from one medium to another. Which one of the following characteristics of sound remains unchanged?



2. The intensity level (sound level) of faintest audible intensity is:



3. If the wavelength of a light is 3 × 10⁻⁷ m, then what is its frequency?



4. The energy of light is determined by its:



5. The product of frequency and wavelength of a wave equals to:



6. An object moving faster than the speed of sound. This object is called:



7. The speed of sound at 0°C in air is 332m/s. What will be the speed of sound at 50°C?



8. Two transverse travelling waves are presented by these equations. y₁ = A₀sin(Kx−ωt) and y₂ = A₀sin(kx−ωt−Ø). These two waves differ in:



9. Longitudinal waves exhibit:



10. If the fundamental frequency of vibration of a string fixed at both ends is 50Hz, the fourth harmonic will be:



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