Physics question and answers for March 19, 2024
- Q You have learnt that a travelling wave in one dimension is represented by a function y f x t where x and must appear in the combination x vt or...
- Q If the sound heard by observer whose equation is given as y 8sin10nt cos t at x 0 The number of beat frequency heard by observer is 2k then the...
- Q 4 4 A wave has a frequency of 120Hz Two points at a distance of 9m apart have phase difference of 1080 The velocity of the wave is 1 340m...
- Q of a particle which represents SHM A y sinot cos ot B y sin ot C y 5 cos 3 t 4 3ot D y 1 wt w t 1...
- Q The intensity of a plane progressive wave of frequency 1 kHz is 10 10 watt m If the density of air is 1 3 kg m and the speed of...
- Q Two tunning forks of frequency 520 Hz anc 524 Hz are vibrated together The time interva between successive maximum and minimum intensity is 1 3 100 IN S 8 1...
- Q represented by the equation y a cos kx wt is superposed with another wave to form a stationary wave such that the point x 0 is a node The equation...
- Q 2 A string is rigidly tied at two ends and its equation of vibration is given by y cos 2 t sin 2x Then the length of string can not...
- Q 030 50 A rod AB of length L is hung from two identical wires 1 and 2 A block of mass m is hung at point O of the rod...
- Q A Write an expression for a linearly polarized harmonic plane wave of scalar amplitude Eo propagating along a line in the xy plane at 45 to the x axis and...
- Q 4 5 6 7 speed of 15 m s What is the speed U with respect to mirror 17 5 m s 4 45 m s Figure shows two plane...
- Q Two superimposing waves are represented by equation y 2 sin2r 10t 0 4x and y 4 sin 2r 20t 0 8x Y2 The ratio of max to min is 1...
- Q 4 The de Broglie wavelength of a particle movir with a velocity of 2 x 108 ms 1 is equal to th wave length of photon What will be ratio...
- Q 5 To make a stationary wave having node at x 0 the equation y Acos wt kx is superimposed to another wave of equation 1 Acos kx cof 3 Acos...
- Q A source of frequency 340 Hz is kept above a vertical cylindrical tube closed at lower end The length of the tube is 120 cm Water is slowly poured in...
- Q At antinodes 1 Pressure is maximum and velocity is minimum 2 Pressure is minimum and velocity is maximum 3 Pressure and velocity both are maximum 4 Pressure and velocity both...
- Q 3 A point source emits sound equally in all directions in a non absorbing medium Two points P and Q are at distance of 2 m and 3 m respectively...
- Q Two wires are in unison If the tension in one of the wires is increased by 2 5 beats are produced per second The initial frequency of each wire is...
- Q A string is stretched along x axis The shape of the string is given by the curve 9 y unit s 9 2x 24x 90 at t 0 and y...
- Q For a particle which is undergoing simple harmonic motion the square of velocity v2 is plotted against the square of displacement x The curve will be 1 An ellipse 2...
- Q 3 0 8 mm 5 The interference pattern shifts downward by 4mm when a polystyrene sheet of refractive index 1 8 is place in front of the lower slit If...
- Q D A tuning fork of frequency 440 Hz is attached to a long string of linear mass density 0 01 kg m kept under a tension of 49 N The...
- Q A standing wave is produced on a string fixed at one end and free at other The length of string must be an a odd integral multiple of 2 b...
- Q A heavy rope is suspended from a rigid suppor wave pulse is set up at the lower end then a the pulse will travel with uniform speed b the pulse...
- Q A light ray falling at an angle of 45 with the surface of a clean slab of ice of thickness 1 00 m is refracted into it at an angle...
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