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### A spherical liquid drop of radius R is divided into 8 equal droplets. If the surface

A spherical liquid drop of radius R is divided into 8 equal droplets. If the surface tension is T, then work done in the process will be

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(a) 2πR²T (b) 3πR²T (c) 4πR²T […]

### A particle of mass M is executing oscillations about the origin on the x-axis.

A particle of mass M is executing oscillations about the origin on the x-axis. The potential energy is U(x)=k|x|³, where k is a positive constant. If the amplitude of oscillation is a, then its time […]

### Two resistances 3Ω and 6Ω are connected in parallel

Two resistances 3Ω and 6Ω are connected in parallel and a 4Ω resistance is connected in series. The current through 3Ω resistance is 0.8 A. Then the potential drop through 4Ω resistance is

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### A thin rod of length L and mass M is held vertically with one end on the floor

A thin rod of length L and mass M is held vertically with one end on the floor and is allowed to fall. Find the velocity of other end when it hits the floor, assuming […]

### The heat dissipated in a resistance can be obtained by measuring of resistance,

The heat dissipated in a resistance can be obtained by measuring of resistance, the current and time. The maximum error in the measurement of these quantities is 1%, 2% and 1% respectively. The maximum error […]

### If R is the radius of earth, the height at which the weight of a body 1/4 of its weight

If R is the radius of earth, the height at which the weight of a body 1/4 of its weight on the surface of earth.

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(a) R (b) 2R (c) R/2 (d) […]