Related InterviewSolutions

• Displacement-time equation of a particle executing SHM is `x=A sin (omega t+(pi)/6)` Time taken by the particle to go directly from `x=-A/2"to"x=+A/2`A. `(pi)/(3omega)`B. `(pi)/(2omega)`C. `(pi)/(omega)`D. `(pi)/(omega)`
• Assertion : The graph of `PE` and `KE` of a particle is `SHM` with respect to position is a parabola Reason : This because `PE` and `KE` not vary linearly with positionA. If both statement -I and Statement -II are true , and statement-II is the correct explanation of statement -IB. If both statemenrt-I and Statement-II are true but statement-II is not the correct explanation of statement -IC. If statement -I is true but statement -II is false.D. If statement -I is true but statement -II is true
• Two drops of same radius are falling through air with steady speed v. If the two drops coalesce, what would be the terminal speed –A. 4VB. 2VC. 3VD. `2^(2//3)`V
• A solid cube of side a and density `rho_(0)` floats on the surface of a liquid of density `rho`. If the cube is slightly pushed downward, then it oscillates simple harmonically with a period ofA. `2pi(rhoL//sigmag)^(1//2)`B. `2pi(sigmaL//rhog)^(1//2)`C. `1//2pi(rhoL//sigmag)^(1//2)`D. `1//2pi(sigmaL//rhog)^(1//2)`
• Assertion : If ice on the pole melts, length of the day will shorten. Reason: Ice will flow towards equator and will result in the decrease in moment of inertia of earth resulting in decrease in frequency of rotation of earth.A. If both statement -I and Statement -II are true , and statement-II is the correct explanation of statement -IB. If both statemenrt-I and Statement-II are true but statement-II is not the correct explanation of statement -IC. If statement -I is true but statement -II is false.D. If statement -I is true but statement -II is true
• A standing tuning fork of frequency `f` is used to find the velocity of sound in air by resonance column appartus. The difference two resonating lengths is `1.0 m`. Then the velocity of sound in air isA. `fm//s`B. `2fm//s`C. `f//2m//s`D. `3fm//s`
• One end of a glass capillary tube with a radius `r=0.05cm` is immersed into water to a depth of `h=2cm`.Excess pressure required to blow an air bubble out of the lower end of the tube will be `(S.T` of water `=70"dyne"//cm`).Take `g=980cm//s^(2)`.A. `480 N//m^(2)`B. `680 N//m^(2)`C. `120 N//m^(2)`D. `820//m^(2)`
• Vibrating tuning fork of frequency `n` is placed near the open end of a long cylindrical tube. The tube has a side opening and is fitted with a movable reflecting piston. As the piston is moved through `8.75 cm`, the intensity of sound changes from a maximum to minimum. If the speed of sound is `350 m//s`. Then `n` is A. 500HzB. 1000HzC. 2000HzD. 4000Hz
• A whistle emitting a sound of frequency `440 H`z is tied to string of `1.5 m` length and rotated with an angular velocity of `20 rad//sec` in the horizontal plane. Then the range of frequencies heard by an observer stationed at a large distance from the whistle will `(v=330 m//s)`A. 400.0Hz to 484.0 HzB. 403.3 Hz to 480.0 HzC. 400.0 Hz to 480.0 HzD. 403.3Hz to 484.0Hz
• The equation for the vibration of a string fixed at both ends vibrating in its third harmonic is given by `y=2cm` `sin[(0.6cm^-1)x]cos[(500pis^-1)t]`. The length of the string isA. 24.6cmB. 12.5cmC. 20.6cmD. 15.7cm