Physics-
General
Easy
Question
The shape of a string on which standing waves are produced at t = 0 is shown here. The suitable equation of standing wave can be
The correct answer is:
Related Questions to study
physics-
In figure a, string 1 has a linear mass density of 3 g/m, and string 2 has a linear mass density of 4.5 g/m. They are under tension due to the hanging block of mass M = 500 g as shown in figure (a)
The block is now divided into two blocks (with M1 + M2 = M) and the apparatus is rearranged as shown in figure b. If the speeds of transverse waves in the two strings are equal the values of M1 and M2 will be respectively
In figure a, string 1 has a linear mass density of 3 g/m, and string 2 has a linear mass density of 4.5 g/m. They are under tension due to the hanging block of mass M = 500 g as shown in figure (a)
The block is now divided into two blocks (with M1 + M2 = M) and the apparatus is rearranged as shown in figure b. If the speeds of transverse waves in the two strings are equal the values of M1 and M2 will be respectively
physics-General
physics-
In figure a, string 1 has a linear mass density of 3 g/m, and string 2 has a linear mass density of 4.5 g/m. They are under tension due to the hanging block of mass M = 500 g as shown in figure (a)
The ratio of speeds of transverse wave in the string 1 to that of string 2 is
In figure a, string 1 has a linear mass density of 3 g/m, and string 2 has a linear mass density of 4.5 g/m. They are under tension due to the hanging block of mass M = 500 g as shown in figure (a)
The ratio of speeds of transverse wave in the string 1 to that of string 2 is
physics-General
physics-
The graph shows a wave travelling to the right with a velocity of 4m/s. The equation that best represent the wave is
The graph shows a wave travelling to the right with a velocity of 4m/s. The equation that best represent the wave is
physics-General
physics-
The figure shows a simple harmonic progressive transverse wave, progressing towards the right. The particle having the maximum acceleration directed downwards is represented by
The figure shows a simple harmonic progressive transverse wave, progressing towards the right. The particle having the maximum acceleration directed downwards is represented by
physics-General
physics-
In figure shown on the right above, the spring constant is K. The mass of the upper disc is m and that of the lower disc is 3m. The upper block is depressed down from its equilibrium position by a distance d and released at t =0.
Suppose 
= 2mg/K. Then, the time ‘t’ at which the energy in spring in zero for first time is
In figure shown on the right above, the spring constant is K. The mass of the upper disc is m and that of the lower disc is 3m. The upper block is depressed down from its equilibrium position by a distance d and released at t =0.
Suppose = 2mg/K. Then, the time ‘t’ at which the energy in spring in zero for first time is
physics-General
physics-
In figure shown on the right above, the spring constant is K. The mass of the upper disc is m and that of the lower disc is 3m. The upper block is depressed down from its equilibrium position by a distance d and released at t =0.
Suppose d = 5mg/K. Then, the velocity of ‘m’ when normal reaction on 3m is mg is
In figure shown on the right above, the spring constant is K. The mass of the upper disc is m and that of the lower disc is 3m. The upper block is depressed down from its equilibrium position by a distance d and released at t =0.
Suppose d = 5mg/K. Then, the velocity of ‘m’ when normal reaction on 3m is mg is
physics-General
physics-
In figure shown on the right above, the spring constant is K. The mass of the upper disc is m and that of the lower disc is 3m. The upper block is depressed down from its equilibrium position by a distance d and released at t =0.
The value of d for which the minimum normal reaction on 3m from ground is mg is
In figure shown on the right above, the spring constant is K. The mass of the upper disc is m and that of the lower disc is 3m. The upper block is depressed down from its equilibrium position by a distance d and released at t =0.
The value of d for which the minimum normal reaction on 3m from ground is mg is
physics-General
physics-
In figure shown on the right above, the spring constant is K. The mass of the upper disc is m and that of the lower disc is 3m. The upper block is depressed down from its equilibrium position by a distance d and released at t =0.
The minimum value of d for which the lower disc loses contact with the ground is
In figure shown on the right above, the spring constant is K. The mass of the upper disc is m and that of the lower disc is 3m. The upper block is depressed down from its equilibrium position by a distance d and released at t =0.
The minimum value of d for which the lower disc loses contact with the ground is
physics-General
physics-
In figure shown on the right, the spring constant is K. The mass of block is m. The block is imparted a downward velocity = v0 at t = 0, at its equilibrium position.
If 
then, the maximum descent of the block from t = 0 is
In figure shown on the right, the spring constant is K. The mass of block is m. The block is imparted a downward velocity = v0 at t = 0, at its equilibrium position.
If then, the maximum descent of the block from t = 0 is
physics-General
physics-
In figure shown on the right, the spring constant is K. The mass of block is m. The block is imparted a downward velocity = 
at t = 0, at its equilibrium position.
The value of for which the minimum pull force on ceiling is 
, will be
In figure shown on the right, the spring constant is K. The mass of block is m. The block is imparted a downward velocity = at t = 0, at its equilibrium position.
The value of for which the minimum pull force on ceiling is , will be
physics-General
physics-
In figure shown on the right, the spring constant is K. The mass of block is m. The block is imparted a downward velocity = v0 at t = 0, at its equilibrium position.
The value of for which the block has zero velocity when spring is in its natural position is
In figure shown on the right, the spring constant is K. The mass of block is m. The block is imparted a downward velocity = v0 at t = 0, at its equilibrium position.
The value of for which the block has zero velocity when spring is in its natural position is
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
chemistry-
The correct order of hybridization of the central atom in the following species 
and 
is (At. No. Pt = 78)
The correct order of hybridization of the central atom in the following species and is (At. No. Pt = 78)
chemistry-General
chemistry-
A complex compound of cobalt has molecular formula containing five 
molecules, one nitro group and two chlorine atoms for one Co atom. one mole of this compound produces three mole ions in aq. Solution. On reacting with excess of 
solution, two moles of AgCl get precipitated. The ionic formula of the compound is
A complex compound of cobalt has molecular formula containing five molecules, one nitro group and two chlorine atoms for one Co atom. one mole of this compound produces three mole ions in aq. Solution. On reacting with excess of solution, two moles of AgCl get precipitated. The ionic formula of the compound is
chemistry-General
chemistry-
In the Hofmann rearrangement an unsubstituted amide is treated with sodium hydroxide and bromine to give a primary amine that has one carbon lesser than starting amide.
General reaction :
Mechanism :
If the migrating group is chiral then its configuration is retained. Electron releasing effects in the migrating group increases reactivity of Hofmann rearrangement.
Which of the following compound(s) cannot give Hoffmann rearrangement :
In the Hofmann rearrangement an unsubstituted amide is treated with sodium hydroxide and bromine to give a primary amine that has one carbon lesser than starting amide.
General reaction :
Mechanism :
If the migrating group is chiral then its configuration is retained. Electron releasing effects in the migrating group increases reactivity of Hofmann rearrangement.
Which of the following compound(s) cannot give Hoffmann rearrangement :
chemistry-General
