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The terminal velocity of a raindrop of radius r is 2 cm/s. If eight is such identical drops combine to form a single large drop, the terminal velocity would be
20
Sep
The terminal velocity of a raindrop of radius r is 2 cm/s. If eight is such identical drops combine to form a single large drop, the terminal velocity would be The terminal velocity of a raindrop of radius r is 2 cm/s. If eight is such identical drops combine to form a single large drop [...]
A spherical solid ball of volume V is made of a material of density ρ1 It is falling through a liquid of density ρ1(ρ2
20
Sep
A spherical solid ball of volume V is made of a material of density ρ1 It is falling through a liquid of density ρ1(ρ2 A spherical solid ball of volume V is made of a material of density ρ1 It is falling through a liquid of density ρ1(ρ2 September 20, 2020 Category: Chapter 13 - [...]
Eight equal drops of water are falling through air with a steady velocity of 10 cm s^−1. If the drops combine to form a single drop big in size, then the terminal velocity of this big drop is
20
Sep
Eight equal drops of water are falling through air with a steady velocity of 10 cm s^−1. If the drops combine to form a single drop big in size, then the terminal velocity of this big drop is Eight equal drops of water are falling through air with a steady velocity of 10 cm s^−1. [...]
Two bulbs consume same energy when operated at 200 V and 300 V , respectively . When these bulbs are connected in series across a dc source of 500 V, then
20
Sep
Two bulbs consume same energy when operated at 200 V and 300 V , respectively . When these bulbs are connected in series across a dc source of 500 V, then respectively . When these bulbs are connected in series across a dc source of 500 V then Two bulbs consume same energy when operated [...]
If resistance of the filament increases with temperature, what will be power dissipated in a 220 V – 100 W lamp when connected to 110 V power supply
20
Sep
If resistance of the filament increases with temperature, what will be power dissipated in a 220 V – 100 W lamp when connected to 110 V power supply If resistance of the filament increases with temperature what will be power dissipated in a 220 V - 100 W lamp when connected to 110 V power [...]
An electric kettle has two coils. When one of these is switched on, the water in the kettle boils in 6 minutes. When the other coil is switched on, the water boils in 3 minutes. If the two coils are connected in series, find the time taken to boil the water in the kettle.
20
Sep
An electric kettle has two coils. When one of these is switched on, the water in the kettle boils in 6 minutes. When the other coil is switched on, the water boils in 3 minutes. If the two coils are connected in series, find the time taken to boil the water in the kettle. An [...]
An electric kettle has two heating coils. When one of the coils is connected to an a.c. source, the water in the kettle boils in 5 minutes. When the other coil is used the water boils in 10 minutes.If both the coils are connected in parallel, the time taken by the same quantity of water to boil will be
20
Sep
An electric kettle has two heating coils. When one of the coils is connected to an a.c. source, the water in the kettle boils in 5 minutes. When the other coil is used the water boils in 10 minutes.If both the coils are connected in parallel, the time taken by the same quantity of water [...]
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An electric kettle has two heating coils. When one of the coils is connected to an a.c. source ,
the time taken by the same quantity of water to boil will be ,
the water in the kettle boils in 5 minutes. When the other coil is used the water boils in 10 minutes.If both the coils are connected in parallel ,
A drop of water of radius 0.0015 mm is falling in air. If the coefficient of viscosity of air is 2.0×10^−5kg/m s, the terminal velocity of the drop will be: (The density of water = 1.0 x 10^3 kgm^−3 and g=10ms^−2)
20
Sep
A drop of water of radius 0.0015 mm is falling in air. If the coefficient of viscosity of air is 2.0×10^−5kg/m s, the terminal velocity of the drop will be: (The density of water = 1.0 x 10^3 kgm^−3 and g=10ms^−2) A drop of water of radius 0.0015 mm is falling in air. If the [...]
The terminal speed attained by an aluminium sphere of radius 1 mm falling through water at 20 degree C will be close to ( Assume laminar flow, specific gravity of AI=2.7and η water = 8×10^−4 PI)
20
Sep
The terminal speed attained by an aluminium sphere of radius 1 mm falling through water at 20 degree C will be close to ( Assume laminar flow, specific gravity of AI=2.7and η water = 8×10^−4 PI) specific gravity of AI=2.7and η water = 8×10^−4 PI) The terminal speed attained by an aluminium sphere of radius [...]
Two wires A and B of same material and mass have their lengths in the ratio 1 : 2. On connecting them to the same source, the rate of heat dissipation in B is found to be 5 W. The rate of heat B dissipation in A, is
20
Sep
Two wires A and B of same material and mass have their lengths in the ratio 1 : 2. On connecting them to the same source, the rate of heat dissipation in B is found to be 5 W. The rate of heat B dissipation in A, is is the rate of heat dissipation in [...]