Physics-
General
Easy
Question
In the figure shown the potential drop across the series resistor is
- 30 V
- 60 V
- 90 V
- 120 V
The correct answer is: 30 V
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Find the effective resistance between A and B
Find the effective resistance between A and B
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Two ideal junction diodes D1, D2 are connected as shown in the figure. A 3V battery is connected between A and B. The current supplied by the battery if its positive terminal is connected to A is
Two ideal junction diodes D1, D2 are connected as shown in the figure. A 3V battery is connected between A and B. The current supplied by the battery if its positive terminal is connected to A is
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VA and VB denote potentials of A and B, then the equivalent resistance between A and B in the adjoining circuit is (ideal diode)
VA and VB denote potentials of A and B, then the equivalent resistance between A and B in the adjoining circuit is (ideal diode)
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In the figure shown a long cart moves on a smooth horizontal surface due to an external constant force of magnitude F Initial mass of the cart is M0 and velocity is zero At t = 0 sand starts falling from a stationary hopper on to the cart with negligible velocity at constant rate m kg/s and sticks to the cart.
The velocity of the cart at time t(<t0)
In the figure shown a long cart moves on a smooth horizontal surface due to an external constant force of magnitude F Initial mass of the cart is M0 and velocity is zero At t = 0 sand starts falling from a stationary hopper on to the cart with negligible velocity at constant rate m kg/s and sticks to the cart.
The velocity of the cart at time t(<t0)
Physics-General
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Two bodies have undergone an elastic one–dimensional collision along x–axis Figure is a graph of position versus time for these bodies and for their center of mass.
The mass of the body that was moving faster before the collision is ________ that of other body.
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The mass of the body that was moving faster before the collision is ________ that of other body.
physics-General
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Two bodies have undergone an elastic one–dimensional collision along x–axis Figure is a graph of position versus time for these bodies and for their center of mass.
Which line segment corresponds to the motion of the center of mass before and after the collision?
Two bodies have undergone an elastic one–dimensional collision along x–axis Figure is a graph of position versus time for these bodies and for their center of mass.
Which line segment corresponds to the motion of the center of mass before and after the collision?
physics-General
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A disk A of radius r moving on perfectly smooth surface at a speed v undergoes an elastic collision with an identical stationary disk B. Find the velocity of the disk B after collision if the impact parameter is r/2 as shown in the figure
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A ball of mass 1kg strikes a heavy platform, elastically, moving upwards with a velocity of 5m/s. The speed of the ball just before the collision is 10m/s downwards. Then the impulse imparted by the platform on the ball is
A ball of mass 1kg strikes a heavy platform, elastically, moving upwards with a velocity of 5m/s. The speed of the ball just before the collision is 10m/s downwards. Then the impulse imparted by the platform on the ball is
physics-General
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A smooth semicircular tube AB of radius r is fixed in a vertical plane and contains a heavy flexible chain of length 
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A ball of mass m = 60gm is shot with speed v0 = 22m/s into the barrel of spring gun of mass M = 240g initially at rest on a frictionless surface. The ball sticks in the barrel at the point of maximum compression of the spring.
What fraction of initial kinetic energy of the ball is now stored in the spring?
A ball of mass m = 60gm is shot with speed v0 = 22m/s into the barrel of spring gun of mass M = 240g initially at rest on a frictionless surface. The ball sticks in the barrel at the point of maximum compression of the spring.
What fraction of initial kinetic energy of the ball is now stored in the spring?
physics-General
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A ball of mass m = 60gm is shot with speed v0 = 22m/s into the barrel of spring gun of mass M = 240g initially at rest on a frictionless surface. The ball sticks in the barrel at the point of maximum compression of the spring.
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A ball of mass m = 60gm is shot with speed v0 = 22m/s into the barrel of spring gun of mass M = 240g initially at rest on a frictionless surface. The ball sticks in the barrel at the point of maximum compression of the spring.
The speed of the spring gun after the ball stops relative to the barrel, is
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A buggy of mass 100 kg is free to move on a frictionless horizontal track. Two men, each of mass 50 kg, are standing on the buggy, which is initially stationary. The men jump off the buggy with velocity=10m/s relative to the buggy. In one situation, the men jump one after the other. In another situation, the men jump simultaneously. What is the ratio of the recoil velocities of the buggy in two cases?
A buggy of mass 100 kg is free to move on a frictionless horizontal track. Two men, each of mass 50 kg, are standing on the buggy, which is initially stationary. The men jump off the buggy with velocity=10m/s relative to the buggy. In one situation, the men jump one after the other. In another situation, the men jump simultaneously. What is the ratio of the recoil velocities of the buggy in two cases?
Physics-General
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A block of mass 10 kg is released on a fixed wedge inside a cart which is moved with constant velocity 10 m/s towards right. Take initial velocity of block with respect to cart zero. Then work done by normal reaction on block in two second in ground frame will be: (g = 10 m/s2)
A block of mass 10 kg is released on a fixed wedge inside a cart which is moved with constant velocity 10 m/s towards right. Take initial velocity of block with respect to cart zero. Then work done by normal reaction on block in two second in ground frame will be: (g = 10 m/s2)
physics-General
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A particle is moved from (0, 0) to (a, a) under a force 
from two paths. Path 1 is OP and path 2 is OQP. Let W1 and W2 be the work done by this force in these two paths. Then
A particle is moved from (0, 0) to (a, a) under a force from two paths. Path 1 is OP and path 2 is OQP. Let W1 and W2 be the work done by this force in these two paths. Then
physics-General
physics-
For the two blocks initially at rest under constant ext. forces of mass 1kg and 2kg shown, 
.Which of the following is correct?
For the two blocks initially at rest under constant ext. forces of mass 1kg and 2kg shown, .Which of the following is correct?
physics-General
