Physics-
General
Easy
Question
The figures represent two snaps of a travelling wave on a string of mass per unit length, 
= 0.25 kg/m. The two snaps are taken at time t = 0 and at 
s. Then
Figure I
Figure II
- speed of wave is 4 m/s
- the tension in the string is 4 N
- the equation of the wave is y = 10 sin (
x – 4pt 
)
- the maximum velocity of the particle
x – 4pt )
The correct answer is: speed of wave is 4 m/s
Related Questions to study
Physics-
Two blocks, each of mass m, are connected by a massless thread Y and A represent Young’s modulus and cross sectional area of wire respectively. The strain developed in the thread is
Two blocks, each of mass m, are connected by a massless thread Y and A represent Young’s modulus and cross sectional area of wire respectively. The strain developed in the thread is
Physics-General
Physics-
A string is hanging from a rigid support. A transverse wave pulse is set up at the bottom. The velocity v of the pulse related to the distance covered by it is given as
A string is hanging from a rigid support. A transverse wave pulse is set up at the bottom. The velocity v of the pulse related to the distance covered by it is given as
Physics-General
Physics-
At t=0 source starts falling under gravity and a detector is projected upwards with a velocity 10 m/s. For the vertical upward motion of detector
At t=0 source starts falling under gravity and a detector is projected upwards with a velocity 10 m/s. For the vertical upward motion of detector
Physics-General
Physics-
The amplitude of resulting wave dues to superposition of y1 = A sin (
t - kx) & y2 = A sin (t - kx + 
) is
The amplitude of resulting wave dues to superposition of y1 = A sin (t - kx) & y2 = A sin (t - kx + ) is
Physics-General
Physics-
When two simple harmonic motions of same periods, same amplitude, having phase difference of 3/2, and at right angles to each other are super imposed, the resultant wave form is a
When two simple harmonic motions of same periods, same amplitude, having phase difference of 3/2, and at right angles to each other are super imposed, the resultant wave form is a
Physics-General
Physics-
When the displacement from the mean position is doubled, the quantity that will vary will be
When the displacement from the mean position is doubled, the quantity that will vary will be
Physics-General
Physics-
S1 and S2 are two identical springs. The oscillation frequency is f. If one spring is removed, frequency will be
S1 and S2 are two identical springs. The oscillation frequency is f. If one spring is removed, frequency will be
Physics-General
Physics-
Two blocks each of mass m are connected with springs of force constant k. Initially springs are relaxed. Mass A is displaced to left and B is displaced towards right by same amount and released then time period of oscillation of any one block (Assume collision to be perfectly elastic)
Two blocks each of mass m are connected with springs of force constant k. Initially springs are relaxed. Mass A is displaced to left and B is displaced towards right by same amount and released then time period of oscillation of any one block (Assume collision to be perfectly elastic)
Physics-General
Physics-
Three springs of each force constant k are connected as shown figure. Point mass m is slightly displaced to compress A and released. Time period of oscillation
Three springs of each force constant k are connected as shown figure. Point mass m is slightly displaced to compress A and released. Time period of oscillation
Physics-General
Physics-
A pendulum makes perfectly elastic collision with block of m lying on a frictionless surface attached to a spring of force constant k. Pendulum is slightly displaced and released. Time period of oscillation of the system is
A pendulum makes perfectly elastic collision with block of m lying on a frictionless surface attached to a spring of force constant k. Pendulum is slightly displaced and released. Time period of oscillation of the system is
Physics-General
Physics-
The period of the free oscillations of the system shown here if mass M1 is pulled down a little and force constant of the spring is k and masses of the fixed pulleys are negligible, is
The period of the free oscillations of the system shown here if mass M1 is pulled down a little and force constant of the spring is k and masses of the fixed pulleys are negligible, is
Physics-General
Physics-
A cylindrical piston of mass M slides smoothly inside a long cylinder closed at one end, enclosing a certain mass of a gas. The cylinder is kept with its axis horizontal. If the piston is slightly compressed isothermally from its equilibrium position, it oscillates simple harmonically, the period of oscillation will be
A cylindrical piston of mass M slides smoothly inside a long cylinder closed at one end, enclosing a certain mass of a gas. The cylinder is kept with its axis horizontal. If the piston is slightly compressed isothermally from its equilibrium position, it oscillates simple harmonically, the period of oscillation will be
Physics-General
Physics-
Two uniform rods are welded together to form a letter T as shown in the figure. Each rod is of mass M and length ‘l’. If this combination is hinged at ‘A’ and kept in vertical plane then time period of small oscillations about A is equal to
Two uniform rods are welded together to form a letter T as shown in the figure. Each rod is of mass M and length ‘l’. If this combination is hinged at ‘A’ and kept in vertical plane then time period of small oscillations about A is equal to
Physics-General
Physics-
The work done by the string of a simple pendulum during one complete oscillation is equal to
The work done by the string of a simple pendulum during one complete oscillation is equal to
Physics-General
Maths-
If the system of equations ax + hy + g = 0, hx + by + f = 0 and ax2 + 2hxy+ by2 + 2gx + 2fy + c + t = 0 has a unique solution, then
If the system of equations ax + hy + g = 0, hx + by + f = 0 and ax2 + 2hxy+ by2 + 2gx + 2fy + c + t = 0 has a unique solution, then
Maths-General
