Chemistry-
General
Easy
Question
A and B are
- None
The correct answer is:
Related Questions to study
physics-
S1 & S2 are two coherent sources of sound having no initial phase difference. The velocity of sound is 330 m/s. No minima will be formed on the line passing through S2 and perpendicular to the line joining S1 and S2 , if the frequency of both the sources is:
S1 & S2 are two coherent sources of sound having no initial phase difference. The velocity of sound is 330 m/s. No minima will be formed on the line passing through S2 and perpendicular to the line joining S1 and S2 , if the frequency of both the sources is:
physics-General
physics-
A string consists of two parts attached at x = 0. The right part of the string (x > 0) has mass mr per unit length and the left part of the string (x < 0) has mass mr per unit length. The string tension is T. If a wave of unit amplitude travels along the left part of the string, as shown in the figure, what is the amplitude of the wave that is transmitted to the right part of the string?
A string consists of two parts attached at x = 0. The right part of the string (x > 0) has mass mr per unit length and the left part of the string (x < 0) has mass mr per unit length. The string tension is T. If a wave of unit amplitude travels along the left part of the string, as shown in the figure, what is the amplitude of the wave that is transmitted to the right part of the string?
physics-General
physics-
Two graphs of the same harmonic wave are shown below. The graph (1) on the left shows the displacement of wave y, as a function of position x for a given instant of time. The graph (2) on the right shows the displacement of wave as a function ot time 't' for a given position. The speed of the wave is
Two graphs of the same harmonic wave are shown below. The graph (1) on the left shows the displacement of wave y, as a function of position x for a given instant of time. The graph (2) on the right shows the displacement of wave as a function ot time 't' for a given position. The speed of the wave is
physics-General
physics-
The prong of a electrically operated tuning fork is connected to a long string of m = 1 kg/m and tension 25 N. The maximum velocity of the prong is 1 cm/s, then the average power needed to drive the prong is:
The prong of a electrically operated tuning fork is connected to a long string of m = 1 kg/m and tension 25 N. The maximum velocity of the prong is 1 cm/s, then the average power needed to drive the prong is:
physics-General
physics-
The wave motion has the function 
. The graph in the figure shows how the displacement y at a fixed point varies with time t. Which one of the labelled points shows a displacement equal to that at the position x = 
/2k at time t = 0?
The wave motion has the function . The graph in the figure shows how the displacement y at a fixed point varies with time t. Which one of the labelled points shows a displacement equal to that at the position x = /2k at time t = 0?
physics-General
physics-
A small bob attached to a light inextensible thread of length l has a periodic time T when allowed to vibrate as a simple pendulum. The thread is now suspended from a fixed end O of a vertical rigid rod of length 
(as in figure). If now the pendulum performs periodic oscillations in this arrangement, the periodic time will be
A small bob attached to a light inextensible thread of length l has a periodic time T when allowed to vibrate as a simple pendulum. The thread is now suspended from a fixed end O of a vertical rigid rod of length (as in figure). If now the pendulum performs periodic oscillations in this arrangement, the periodic time will be
physics-General
physics-
Two particles undergo SHM along parallel lines with the same time period (T) and equal amplitudes. At a particular instant, one particle is at its extreme position while the other is at its mean position. They move in the same direction. They will cross each other after a further time
Two particles undergo SHM along parallel lines with the same time period (T) and equal amplitudes. At a particular instant, one particle is at its extreme position while the other is at its mean position. They move in the same direction. They will cross each other after a further time
physics-General
physics-
A system of two identical rods (L-shaped) of mass m and length l are resting on a peg P as shown in the figure. If the system is displaced in its plane by a small angle 
, find the period of oscillations:
A system of two identical rods (L-shaped) of mass m and length l are resting on a peg P as shown in the figure. If the system is displaced in its plane by a small angle , find the period of oscillations:
physics-General
physics-
A particle starts from a point P at a distance of A/2 from the mean position O & travels towards left as shown in the figure. If the time period of SHM, executed about O is T and amplitude A then the equation of motion of particle is :
A particle starts from a point P at a distance of A/2 from the mean position O & travels towards left as shown in the figure. If the time period of SHM, executed about O is T and amplitude A then the equation of motion of particle is :
physics-General
physics-
The figure shows a graph between velocity and displacement (from mean position) of a particle performing SHM:
The figure shows a graph between velocity and displacement (from mean position) of a particle performing SHM:
physics-General
physics-
In the figure shown, two identical discs of radius R each are placed on a smooth horizontal plane. Thread unwraps without slack from discs when they move away from each other. At any instant acceleration of centres of disc A and B are a2 and a1 respectively in opposite direction while their angular acceleration are a2 and a1 respectively. If string unwraps from discs without slipping then
In the figure shown, two identical discs of radius R each are placed on a smooth horizontal plane. Thread unwraps without slack from discs when they move away from each other. At any instant acceleration of centres of disc A and B are a2 and a1 respectively in opposite direction while their angular acceleration are a2 and a1 respectively. If string unwraps from discs without slipping then
physics-General
physics-
A uniform disc of mass M and radius R is supported vertically by a pivot at its periphery as shown. A particle of mass M is fixed to the rim and raised to the highest point above the centre. The system is then released from rest and it can rotate about its pivot freely. The angular speed of the system when the attached object is directly beneath the pivot is
A uniform disc of mass M and radius R is supported vertically by a pivot at its periphery as shown. A particle of mass M is fixed to the rim and raised to the highest point above the centre. The system is then released from rest and it can rotate about its pivot freely. The angular speed of the system when the attached object is directly beneath the pivot is
physics-General
physics-
Two trolleys 1 and 2 are moving with accelerations a1 and a2 respectively in the same direction. A block of mass ‘’m’’ on trolley 1 is in equilibrium from the frame of observer stationary w.r.t. trolley 2. The magnitude of friction force on block due to trolley is (assume that no horizontal force other than friction force is acting on block)
Two trolleys 1 and 2 are moving with accelerations a1 and a2 respectively in the same direction. A block of mass ‘’m’’ on trolley 1 is in equilibrium from the frame of observer stationary w.r.t. trolley 2. The magnitude of friction force on block due to trolley is (assume that no horizontal force other than friction force is acting on block)
physics-General
physics-
A thin rod of mass M and length L is struck at one end by a ball of clay of mass m, moving with speed v as shown in figure. The ball sticks to the rod. After the collision, the angular momentum of the clay-rod system about A, the midpoint of the rod, is
A thin rod of mass M and length L is struck at one end by a ball of clay of mass m, moving with speed v as shown in figure. The ball sticks to the rod. After the collision, the angular momentum of the clay-rod system about A, the midpoint of the rod, is
physics-General
physics-
One ice skater of mass m moves with speed 2v to the right, while another of the same mass m moves with speed v toward the left, as shown in figure I. Their paths are separated by a distance b. At t = 0, when they are both at x = 0, they grasp a pole of length b and negligible mass. For t > 0, consider the system as a rigid body of two masses m separated by distance b, as shown in figure II. Which of the following is the correct formula for the motion after t = 0 of the skater initially at y = b/2?
One ice skater of mass m moves with speed 2v to the right, while another of the same mass m moves with speed v toward the left, as shown in figure I. Their paths are separated by a distance b. At t = 0, when they are both at x = 0, they grasp a pole of length b and negligible mass. For t > 0, consider the system as a rigid body of two masses m separated by distance b, as shown in figure II. Which of the following is the correct formula for the motion after t = 0 of the skater initially at y = b/2?
physics-General
