Physics-
General
Easy
Question
Figure shows the orbit of a planet P round the sun S. AB and CD are the minor and major axes of the ellipse.
If U is the potential energy and K kinetic energy then 
at
- Only D
- Only C
- both D & C
- neither D nor C
The correct answer is: both D & C
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physics-
Figure shows the orbit of a planet P round the sun S. AB and CD are the minor and major axes of the ellipse.
If t1 is the time taken by the planet to travel along ACB and t2 the time along BDA, then
Figure shows the orbit of a planet P round the sun S. AB and CD are the minor and major axes of the ellipse.
If t1 is the time taken by the planet to travel along ACB and t2 the time along BDA, then
physics-General
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v-t graph of an object of mass 1 kg is shown
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Two identical balls A and B are released from the positions shown in figure. They collide elastically on horizontal portion MN. All surfaces are smooth. The ratio of heights attained by A and B after collision will be(Neglect energy loss at M & N)
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A car travelling on a smooth road passes through a curved portion of the road in form of an arc of circle of radius 10 m. If the mass of car is 500 kg, the reaction on car at lowest point P where its speed is 20 m/s is
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The block A is pushed towards the wall by a distance and released. The normal reaction by vertical wall on the block B v/s compression in spring is given by :
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In a conical pendulum, the bob is rotated with different angular velocities and tension in the string is calculated for different values of 
. Which of them is correct graph between T &
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Tangential acceleration of a particle moving in a circle of radius 1 m varies with time t as (initial velocity of particle is zero). Time after which total acceleration of particle makes and angle of 30° with radial acceleration is
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At a given instant, A is moving with velocity of 5m/s upwards What is velocity of B at that time :
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physics-General
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A force 
acts on block shown. The force of friction acting on the block is :
A force acts on block shown. The force of friction acting on the block is :
physics-General
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A student calculates the acceleration of m1 in figure shown as 
Which assumption is not required to do this calculation.
A student calculates the acceleration of m1 in figure shown as Which assumption is not required to do this calculation.
physics-General
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Both the blocks shown here are of mass m and are moving with constant velocity in direction shown in a resistive medium which exerts equal constant force on both blocks in direction opposite to the velocity. The tension in the string connecting both of them will be : (Neglect friction)
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Equal force F (> mg) is applied to string in all the 3 cases. Starting from rest, the point of application of force moves a distance of 2 m down in all cases. In which case the block has maximum kinetic energy?
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physics-General
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What should be the minimum force P to be applied to the string so that block of mass m just begins to move up the frictionless plane
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physics-General
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A truck starting from rest moves with an acceleration of 5 m/s2 for 1 sec and then moves with constant velocity. The velocity w.r.t ground v/s time graph for block in truck is (Assume that block does not fall off the truck)
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physics-General
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If position time graph of a particle is sine curve as shown, what will be its velocity-time graph.
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physics-General
