Related InterviewSolutions

• A string is stretched by a force of 40 newton. The mass of 10 m length of this string is 0.01 kg. the speed of transverse waves in this string will beA. 400m/sB. 40 m/sC. 200 m/sD. 80 m/s
• Graph shows three waves that are separately sent along a string that is stretched under a certain tension along x-axis. If `omega_(1),omega_(2) and omega_(3)` are their angular frequencies, respectively, then: A. `omega_(1)=omega_(3) gt omega_(2)`B. `omega_(1)gtomega_(2)gtomega_(3)`C. `omega_(2)gtomega_(1)=omega_(3)`D. `omega_(1)=omega_(2)=omega_(3)`
• Two interferring waves have the same wavelength, frequency and amplitude. They are travelling in the same direction but `90^(@)` out of phase compared to individual waves. The resultant wave will have the same.A. amplitude and velocity but different wavelengthB. frequency and velocity but different wavelengthC. wavelength and velocity but different amplitudeD. amplitude and frequency but different wavelength
• Sinusoidal waves `5.00 cm ` in amplitude are to be transmitted along a string having a linear mass density equal to `4.00xx10^-2kg//m`. If the source can deliver a maximum power of `90W` and the string is under a tension of `100N`, then the highest frequency at which the source can operate is (take `pi^2=10`)A. 45.3 HzB. 50 HzC. 30 HzD. 62.3 Hz
• The displacement from the position of equilibrium of a point 4 cm from a source of sinusoidal oscillations is half the amplitude at the moment `t=T//6` (T is the time perios). Assume that the source was at mean position at `t=0`. The wavelength of the running wave is :A. 0.96 mB. 0.48 mC. 0.24 mD. 0.12 m
• The equetion of a wave travelling on a string is `y = 4 sin(pi)/(2)(8t-(x)/(8))` if x and y are in centimetres, then velocity of waves isA. 64 cm/s in -x directionB. 32 cm/s in -x directionC. 32 cm/s in +x directionD. 64 cm/s in +x direction
• `S_(1)` : A standing wave pattern if formed in a string. The power transfer through a point (other than node and antinode) is zero always `S_(2)`: if the equation of transverse wave is `y= sin 2pi[t/0.04-x/40]`, where distance is in cm. time in second, then the wavelength will be 40 cm. `S_(3)`: if the length of the vibrating string is kept constant, then frequency of the string will be directly proportional to `sqrt(T)`A. FTTB. TTFC. TFTD. FFF
• Assertion: In a small segment of string carrying sinusoidal wave, total energy is conserved. Reason: Every small part moves in SHM and total energy of SHM is conserved.A. if both Assertion and Reason are true and the Reason is correct explanation of the Assertion.B. If both Assertion and reason are true, but reason is not correct explanation of the Assertion.C. If Assertion is true, but the reason is falseD. If assertion is false, but the reason is true.
• The equation of a progressive wave is given by `y=a sin (628t-31.4x)`. If the distance are expressed in cms and time seconds, then the wave in this string wll beA. 314 cnB. 628 cmC. 5 cmD. 400 cm
• Two small boats are `10m` apart on a lake. Each pops up and down with a period of 4.0 seconds due to wave motion on the surface of water. When one boat is at its highest point, the other boat is its lowest point. Both boats are always within a single cycle of the waves. The speed of the waves is:A. 2m/secB. 2.5 m/sC. 10 m/sD. 5 m/sec