Many elements have non-integral atomic masses
A battery is charged at a potential of 15V for 8 hours when the current flowing is 10A. The battery on discharge supplies a current of 5 A for 15 hours. The mean terminal voltage during discharge is 14 V. The “Watt hour” efficiency of the battery is :
07
Dec
A battery is charged at a potential of 15V for 8 hours when the current flowing is 10A. The battery on discharge supplies a current of 5 A for 15 hours. The mean terminal voltage during discharge is 14 V. The “Watt hour” efficiency of the battery is : because Many elements have non-integral atomic [...]
Two identical batteries each of emf E=2volt and internal resistance r=1 ohm are available t. produce heat in an external resistance by passing a current through it. What is the maximum power that can be developed across an external resistance R using these batteries?
07
Dec
Two identical batteries each of emf E=2volt and internal resistance r=1 ohm are available t. produce heat in an external resistance by passing a current through it. What is the maximum power that can be developed across an external resistance R using these batteries? because Many elements have non-integral atomic masses December 7, 2020 Category: [...]
A block of mass 2 kg is hanging from an ideal pulley as shown the string a and string B as shown are having linear mass density 4×10^-3 kg/m and 16×10^-3 kg/m respectively. The velocity of wave in string A and string B respectively are
07
Dec
A block of mass 2 kg is hanging from an ideal pulley as shown the string a and string B as shown are having linear mass density 4×10^-3 kg/m and 16×10^-3 kg/m respectively. The velocity of wave in string A and string B respectively are because Many elements have non-integral atomic masses December 7, 2020 [...]
Two separated sources emit sinusoidal travelling waves but have the same wavelength λ and are in phase at their respective sources . One travels a distance l1 to get to the observation point while the other travels a distance l2 . The amplitude is minimum at the observation point , l1−l2 is an
07
Dec
Two separated sources emit sinusoidal travelling waves but have the same wavelength λ and are in phase at their respective sources . One travels a distance l1 to get to the observation point while the other travels a distance l2 . The amplitude is minimum at the observation point , l1−l2 is an because Many [...]
In Young’s double slit experiment the two slits are d distance apart. Interference pattern is observed on a screen at a distance D from the slits. A dark fringe is observed on the screen directly opposite to one of the slits. The wavelength of light is
07
Dec
In Young’s double slit experiment the two slits are d distance apart. Interference pattern is observed on a screen at a distance D from the slits. A dark fringe is observed on the screen directly opposite to one of the slits. The wavelength of light is because Many elements have non-integral atomic masses December 7, [...]
Two masses m and m/2 are connected at the two ends of a massless rigid rod of length l. The rod is suspended by a thin wire of torsional constant k at the centre of mass of the rod-mass system (see figure). Because of torsional constant k, the restoring torque is = kθ for angular displacement 0. If the rod is rotated by θ0 and released, the tension in it when it passes through its mean position will be:
07
Dec
Two masses m and m/2 are connected at the two ends of a massless rigid rod of length l. The rod is suspended by a thin wire of torsional constant k at the centre of mass of the rod-mass system (see figure). Because of torsional constant k, the restoring torque is = kθ for angular [...]
The force constant of a weightless spring is 16 N/m. A body of mass 1.0 kg suspended from it is pulled down through 5 cm from it mean position and then released. The maximum kinetic energy of the body will be?
07
Dec
The force constant of a weightless spring is 16 N/m. A body of mass 1.0 kg suspended from it is pulled down through 5 cm from it mean position and then released. The maximum kinetic energy of the body will be? because Many elements have non-integral atomic masses December 7, 2020 Category: Uncategorised (JEE Advanced [...]
A motor cycle starts from rest and accelerates along a straight path at 2m/s^2. At the starting point of the motor cycle there is a stationary electric siren. How far has the motor cycle gone when the driver hears the frequency of the siren at 94% of its value when the motor cycle was at rest ? (Speed of sound = 330ms^(-2))`
07
Dec
A motor cycle starts from rest and accelerates along a straight path at 2m/s^2. At the starting point of the motor cycle there is a stationary electric siren. How far has the motor cycle gone when the driver hears the frequency of the siren at 94% of its value when the motor cycle was at [...]
A train is moving at 30m/s in still air. The frequency of the locomotive whistle is 500Hz and the speed of sound is 345m/s. The apparent wavelengths of sound in front of and behind the locomotive are respectively
07
Dec
A train is moving at 30m/s in still air. The frequency of the locomotive whistle is 500Hz and the speed of sound is 345m/s. The apparent wavelengths of sound in front of and behind the locomotive are respectively because Many elements have non-integral atomic masses December 7, 2020 Category: Uncategorised (JEE Advanced Physics by BM [...]
The difference between the apparent frequency of a source of sound as perceived by the observer during its approach and recession is 2% of the actual frequency of the source. If the speed of the sound in air is 300m/s, the speed of the source is :
07
Dec
The difference between the apparent frequency of a source of sound as perceived by the observer during its approach and recession is 2% of the actual frequency of the source. If the speed of the sound in air is 300m/s, the speed of the source is : because Many elements have non-integral atomic masses December [...]