A spring of spring constant 5 x 10³ N/m is stretched initially by 5 cm
A spring of spring constant 5 x 10³ N/m is stretched initially by 5 cm from the unstretched position. The work required to stretch it further by another 5 cm is
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(a) […]
Questions
The density of ice is 0.9 g/cc and that of sea water is 1.1 g/cc
The density of ice is 0.9 g/cc and that of sea water is 1.1 g/cc. An ice berg of volume V is floating in sea water. The fraction of ice berg above water level is […]
A 1 kg particle strikes a wall with velocity 1 m/s at an angle 30° and reflects
A 1 kg particle strikes a wall with velocity 1 m/s at an angle 30° and reflects at the same angle. If it remains contact with wall for 0.1 sec, then the force is
64 drops of mercury, each charged to a potential of 10 V, are combined
64 drops of mercury, each charged to a potential of 10 V, are combined to form one bigger drop. The potential of this drop will be(Assume all drops are spherical)
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(a) 160 […]
A particle is under two mutually perpendicular simple harmonic motions
A particle is under two mutually perpendicular simple harmonic motions having different amplitudes and a phase difference of π/2. The path of the particle will be
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(a) circular (b) straight line (c) […]
A bucket full of water is revolved in a vertical circle of 2m
A bucket full of water is revolved in a vertical circle of 2m. What should be the maximum time period of revolution so that the water does not fall off the bucket?
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A milli ammeter of range 10 mA has a coil of resistance 1 ohm
A milli ammeter of range 10 mA has a coil of resistance 1 ohm. To use it as voltmeter of range 10V, the resistance that must be connected in series with it, will be
A body of mass m is placed on the earth’s surface. It is taken from the earth’s surface
A body of mass m is placed on the earth’s surface. It is taken from the earth’s surface to a height h=3R. The change in gravitational potential energy of the body is
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A wire of length 1 m is placed in a uniform magnetic field of 1.5 tesla at an angle
A wire of length 1 m is placed in a uniform magnetic field of 1.5 tesla at an angle of 30° to it. The current in the wire is 10 amp. Then the force on […]
A solenoid 1.5 m long and 0.4 cm in diameter possesses 10 turns per cm length
A solenoid 1.5 m long and 0.4 cm in diameter possesses 10 turns per cm length. A current of 5 A falls through it. The magnetic field at the axis inside the solenoid is