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General
Easy
Question
A steel block of mass M is being lifted by a helicopter, which is accelerating upward with an acceleration of magnitude a. The block is attached to a horizontal bar by two cables, which make angles of 
and 
w.r.t. horizontal as shown in the figure. The tension in the cable 1 in terms of M, , , g and a is
The correct answer is:
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A block of mass m = 2 kg is moving with velocity v0 towards a massless unstretched spring of force constant k = 10 N/m. Coefficient of friction between the block and the ground is m = 1/5. Find the maximum value of v0 , so that after pressing the spring the block does not return back but stops there permanently.
A block of mass m = 2 kg is moving with velocity v0 towards a massless unstretched spring of force constant k = 10 N/m. Coefficient of friction between the block and the ground is m = 1/5. Find the maximum value of v0 , so that after pressing the spring the block does not return back but stops there permanently.
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AB is an incident beam of light and CD is a reflected beam (the number of reflections for this may be 1 or more than 1) of light. AB & CD are separated by some distance. It is possible by placing what type of mirror on the right side
AB is an incident beam of light and CD is a reflected beam (the number of reflections for this may be 1 or more than 1) of light. AB & CD are separated by some distance. It is possible by placing what type of mirror on the right side
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A small mass m slides from a point A of smooth quarter circular surface of mass M (free to move) as shown in figure. Mass M lies on smooth ground. When m reaches point B of M : (AB is one-fourth part of a circle of radius ‘r’) [Line OA is horizontal and OB is vertical]
A small mass m slides from a point A of smooth quarter circular surface of mass M (free to move) as shown in figure. Mass M lies on smooth ground. When m reaches point B of M : (AB is one-fourth part of a circle of radius ‘r’) [Line OA is horizontal and OB is vertical]
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From the circular disc of radius 4R two small disc of radius R are cut off. The centre of mass of the new structure will be:
From the circular disc of radius 4R two small disc of radius R are cut off. The centre of mass of the new structure will be:
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Two different isotherms representing the relationship between pressure P and volume V at a same temperature of the same ideal gas are shown for masses m1 and m2 of the gas respectively in the figure given, then:
Two different isotherms representing the relationship between pressure P and volume V at a same temperature of the same ideal gas are shown for masses m1 and m2 of the gas respectively in the figure given, then:
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Figure shows the variation of energy with the orbit radius r of a satellite in a circular motion. Select the correct statement.
Figure shows the variation of energy with the orbit radius r of a satellite in a circular motion. Select the correct statement.
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A body moves in a circle of radius R having centre at origin, with an angular velocity w in the x-y plane as shown in the figure. Another body moves parallel to y-axis with constant velocity (R
/2). At time t = 0, both particles are at (R, 0). The value time t, when first body has velocity only along positive x-axis w.r.t. the second body is
A body moves in a circle of radius R having centre at origin, with an angular velocity w in the x-y plane as shown in the figure. Another body moves parallel to y-axis with constant velocity (R /2). At time t = 0, both particles are at (R, 0). The value time t, when first body has velocity only along positive x-axis w.r.t. the second body is
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A student is standing on a train travelling along a straight horizontal track at a speed of 10 m/s. The student throws a ball into the air along a path, that he sees to make an initial angle of 60° with the horizontal along the track. The professor standing on the ground observes the ball to rise vertically, the maximum height reached by the ball is
A student is standing on a train travelling along a straight horizontal track at a speed of 10 m/s. The student throws a ball into the air along a path, that he sees to make an initial angle of 60° with the horizontal along the track. The professor standing on the ground observes the ball to rise vertically, the maximum height reached by the ball is
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A particle is projected at an angle of 45° with the horizontal with a speed u in a uniform gravitational field, as shown in the figure. The instantaneous angular speed of the particle w.r.t point of projection at the moment it falls at the same horizontal level equals
A particle is projected at an angle of 45° with the horizontal with a speed u in a uniform gravitational field, as shown in the figure. The instantaneous angular speed of the particle w.r.t point of projection at the moment it falls at the same horizontal level equals
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A capacitor of capacitance 0.1 
F is connected to a battery of emf 8V as shown in the fig. Under steady state condition
A capacitor of capacitance 0.1 F is connected to a battery of emf 8V as shown in the fig. Under steady state condition
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In the circuit shown in the figure, switches S1 and S2 have been closed for a long time
In the circuit shown in the figure, switches S1 and S2 have been closed for a long time
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In the circuit shown, the switch is shifted from position 1 
2 at t = 0. The switch was initially in position 1 since a long time. The graph between charge on capacitor C and time 't' is
In the circuit shown, the switch is shifted from position 1 2 at t = 0. The switch was initially in position 1 since a long time. The graph between charge on capacitor C and time 't' is
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In the circuit shown, the charge on the 3 F capacitor at steady state will be
In the circuit shown, the charge on the 3 F capacitor at steady state will be
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The figure below shows four parallel plate capacitors : A, B, C and D. Each capacitor carries the same charge q and has the same plate area A. As suggested by the figure, the plates of capacitors A and C are separated by a distance d while those of B and D are separated by a distance 2d. Capacitors A and B are maintained in vacuum while capacitors C and D contain dielectrics with constant k = 5.
Which capacitor has the largest potential difference between its plates?
The figure below shows four parallel plate capacitors : A, B, C and D. Each capacitor carries the same charge q and has the same plate area A. As suggested by the figure, the plates of capacitors A and C are separated by a distance d while those of B and D are separated by a distance 2d. Capacitors A and B are maintained in vacuum while capacitors C and D contain dielectrics with constant k = 5.
Which capacitor has the largest potential difference between its plates?
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The figure below shows four parallel plate capacitors : A, B, C and D. Each capacitor carries the same charge q and has the same plate area A. As suggested by the figure, the plates of capacitors A and C are separated by a distance d while those of B and D are separated by a distance 2d. Capacitors A and B are maintained in vacuum while capacitors C and D contain dielectrics with constant k = 5.
Which list below places the capacitors in order of increasing capacitance?
The figure below shows four parallel plate capacitors : A, B, C and D. Each capacitor carries the same charge q and has the same plate area A. As suggested by the figure, the plates of capacitors A and C are separated by a distance d while those of B and D are separated by a distance 2d. Capacitors A and B are maintained in vacuum while capacitors C and D contain dielectrics with constant k = 5.
Which list below places the capacitors in order of increasing capacitance?
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