Physics-
General
Easy
Question
A uniform ring is rotating about vertical axis with angular velocity 
initially. A point insect (S) having the same mass as that of the ring starts walking from the lowest point P1 and finally reaches the point P2 (as shown in figure). The final angular velocity of the ring will be equal to
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- none
The correct answer is:
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An potential energy curve U(x) is shown in the figure. What value must the mechanical energy Emec of the particle not exceed, if the particle is to be trapped within the region shown in graph?
An potential energy curve U(x) is shown in the figure. What value must the mechanical energy Emec of the particle not exceed, if the particle is to be trapped within the region shown in graph?
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Two mirrors are inclined at an angle 
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A smooth ring of mass 'm' can freely slide along the smooth massless curved rod shown in the figure. The rod has been fixed on a block of mass M. At the lower most point, the curved path becomes vertical. If the whole system is released from rest, velocity of the ring (V) at the lowermost point just before striking block
A smooth ring of mass 'm' can freely slide along the smooth massless curved rod shown in the figure. The rod has been fixed on a block of mass M. At the lower most point, the curved path becomes vertical. If the whole system is released from rest, velocity of the ring (V) at the lowermost point just before striking block
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Two smooth tracks of equal length have “bumps”-- A up, and B down, both of the same curvature and size. The two balls start simultaneously with the same initial speed = 3 m/s. If the speed of the ball at the bottom of the curve on track B is 4 m/s, then the speed of the ball at the top of the curve on track A is
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Two trolley A and B are moving with accelerations a and 2a respectively in the same direction. To an observer in trolley A, the magnitude of pseudo force acting on a block of mass m on the trolley B is
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In the arrangement shown in figure. The ratio of velocity V1 & V2 of block (1) & (2) is
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Moment of inertia of a thin uniform semicircular wire having mass M, radius R and centre C about an axis passing through point O and perpendicular to its plane is
Moment of inertia of a thin uniform semicircular wire having mass M, radius R and centre C about an axis passing through point O and perpendicular to its plane is
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A uniform rod having length L, is made of material having density 
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A block of mass m moving on the horizontal x-y plane having coefficient of friction . The particle has a velocity 
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In wave, displacement of origin is varying according to 
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A point-like object of mass 2.0 kg moves along the x-axis with a velocity of + 4.0 m/s. A net horizontal force acting along the x-axis is applied to the object with the force-time profile shown. What is the total work that was done by the force?
A point-like object of mass 2.0 kg moves along the x-axis with a velocity of + 4.0 m/s. A net horizontal force acting along the x-axis is applied to the object with the force-time profile shown. What is the total work that was done by the force?
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A mass on the end of a spring oscillates with the displacement versus time graph shown to the right. Which of the following statements about its motion is CORRECT?
A mass on the end of a spring oscillates with the displacement versus time graph shown to the right. Which of the following statements about its motion is CORRECT?
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Consider the cyclic process ABCA shown in figure, performed on a sample of 1 mole of an ideal gas. A total of 1000 J of heat is withdrawn from the sample in the process, the work done on the gas during part BC is 1830 J, the value of Tb is (R = 8.3 J/K-mole)
Consider the cyclic process ABCA shown in figure, performed on a sample of 1 mole of an ideal gas. A total of 1000 J of heat is withdrawn from the sample in the process, the work done on the gas during part BC is 1830 J, the value of Tb is (R = 8.3 J/K-mole)
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A rubber ball bounces on the ground as shown. After each bounce, the ball reaches one-half the highest of the bounce before it. If the time the ball was in the air between the first and second bounce was 1 second, what would be the time between the second and third bounce?
A rubber ball bounces on the ground as shown. After each bounce, the ball reaches one-half the highest of the bounce before it. If the time the ball was in the air between the first and second bounce was 1 second, what would be the time between the second and third bounce?
physics-General
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A monatomic ideal gas is used as the working substance for the Carnot cycle shown in the figure. Processes AB and CD are isothermal, while processes BC and DA are adiabatic. During process AB, 400 J of work is done by the gas on the surroundings. How much heat is expelled by the gas during process CD?
A monatomic ideal gas is used as the working substance for the Carnot cycle shown in the figure. Processes AB and CD are isothermal, while processes BC and DA are adiabatic. During process AB, 400 J of work is done by the gas on the surroundings. How much heat is expelled by the gas during process CD?
physics-General
