Related InterviewSolutions

• Two astronauts go the surface of the moon and would speak to each other. Explain how they could achieve this.
• When a disturbance is created in a medium, the particles in the medium perform ____A. non-periodic motionB. circular motionC. translatory motionD. periodic motion
• Assertion (A): Sound cannot be propagated on the moon. Reason (R) : Sound requires a medium to propagateA. A and R are correct and R is the correct explanation of AB. A and R are correct but R is not the correct explanation of AC. A is correct but R is not correctD. Both A and R are not correct
• A sound wave of frequency 660 Hz incidents normally on a perfectly reflecting surface. If the speed of sound in air is `330 m s^(-1)`, what is the time taken by a particle in the medium to complete one vibration? Determine the wave length of the wave.
• Two pendula of the same length oscillate with amplitudes of 3 cm and 5 cm, respectively. The average time period noted for 3 trials for the first pendulum is found to be 2s, what will be the average time period for the second pendulum ?
• Both sound and light waves can be propagated throughA. vacuumB. airC. Both (a) and (b)D. None of the above
• Frequency of a sound wave produced by a vibrating body is 50 Hz. Find the wavelength of the sound wave produced. `(V_("air") = 330 ms^(-1))`
• Find the ratio of lengths of two pendula whose time periods are in the ratio `1 : 4`
• Find the ratio of time periods of two pendula whose lengths are in the ratio `1 : 4`
• The length of the seconds pendulums is first increased by 10 cm and then decreased by 5 cm. If the time period is determined in each case, find their ratio (Take `g = 10 ms^(-2), pi^(2) ~= 10`)