A hall has a volume of 2265 m3. Its total absorption is equivalent to 94.85 sabinem2. What will be the effect on reverberation time if the audience fill the hall, and thereby increasing the absorption by another 94.85 sabinem2?
What is superconductor? Discuss about the Meissner effect, the effect of magnetic fields and the Isotopic effect in superconductors.
Calculate the critical current for a superconducting wire made of lead, having a diameter of 1 mm at 4.2 K. Critical temperature (TC) for lead is 7.18 K and H0 = 6.5 104 A/m.
Find the force required to increase the length of a steel wire of 10-6 m2 area of cross- section by 50% whose Young’s modulus is 2 1011 N/m2.
Derive the differential equation for damped harmonic motion. Also, derive the solution for the case where 𝑏2 < 𝜔0
What is torsional pendulum? Derive the expression for the time period of vibration for torsional pendulum.
Calculate the length of nickel rod required to produce ultrasonic waves with frequencies of 50 kHz and 100 kHz. Consider the fundamental mode of vibration for the rod. Given: Density of nickel = 8908 kg/m3, Young’s modulus of nickel = 2.14 1011 N/m2.
Discuss the construction and working of piezoelectric oscillator for the production of ultrasonic waves.
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Official Gujarat Technological University (GTU) examination paper and step-by-step solutions for Physics (Summer 2025, B.E. · Common Engineering, Sem 1). Features complete 70-mark regular & remedial examination pattern, official marking distribution across all 5 questions, and direct 1-click official PDF download.
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