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If a photocell is illuminated with a radiation of 1240 A, then stopping potential is found to be 8 V. The work function of the emitter and the threshold wavelength are
14
Oct
If a photocell is illuminated with a radiation of 1240 A, then stopping potential is found to be 8 V. The work function of the emitter and the threshold wavelength are If a photocell is illuminated with a radiation of 1240 A then stopping potential is found to be 8 V. The work function of [...]
A material particle with a rest mass mo is moving with velocity of light c. Then, the wavelength of the de Broglie wave associated with it is
14
Oct
A material particle with a rest mass mo is moving with velocity of light c. Then, the wavelength of the de Broglie wave associated with it is A material particle with a rest mass mo is moving with velocity of light c. Then the wavelength of the de Broglie wave associated with it is October [...]
An electron of mass me and a proton of mass mp are accelerated through the same potential difference. The ratio of the de Broglie wavelength associated with an electron to that
14
Oct
An electron of mass me and a proton of mass mp are accelerated through the same potential difference. The ratio of the de Broglie wavelength associated with an electron to that An electron of mass me and a proton of mass mp are accelerated through the same potential difference. The ratio of the de Broglie [...]
A modern 200 W sodium lamp emits yellow light of wavelength 0.6 mu m. Assuming it to be 25% efficient in converting electrical energy to light, the number of photons of yellow
14
Oct
A modern 200 W sodium lamp emits yellow light of wavelength 0.6 mu m. Assuming it to be 25% efficient in converting electrical energy to light, the number of photons of yellow A modern 200 W sodium lamp emits yellow light of wavelength 0.6 mu m. Assuming it to be 25% efficient in converting electrical [...]
If a surface has a work function 4.0 eV, what is the maximum velocity of electrons liberated from the surface when it is irradiated with ultraviolet radiation of wavelength 0.2 mu m?
14
Oct
If a surface has a work function 4.0 eV, what is the maximum velocity of electrons liberated from the surface when it is irradiated with ultraviolet radiation of wavelength 0.2 mu m? If a surface has a work function 4.0 eV what is the maximum velocity of electrons liberated from the surface when it is [...]
In the previous problrm , thre maximum range of movement of the of the centre of the part of the circle from line AD in which charged particle of charge Q moves with a velocity v when theta is positive to when theta is negative is given by
14
Oct
In the previous problrm , thre maximum range of movement of the of the centre of the part of the circle from line AD in which charged particle of charge Q moves with a velocity v when theta is positive to when theta is negative is given by 0) is placed in x−y plane as [...]
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0) is placed in x−y plane as shown in figure. The force on semicircular wire will be ,
2 ,
A uniform magnetic field B =(3 i ^ +4 j ^ + k ^ ) exists in region of space. A semicircular wire of radius 1 m carrying current 1 A having its centre at (2 ,
In the previous problrm ,
Two rectangular plates A and B placed at a distance 2a apart ,
Photoelectric work function of a metal is 1 eV. Light of wavelength lemda = 3000 A falls on it. The photoelectrons come out with velocity
14
Oct
Photoelectric work function of a metal is 1 eV. Light of wavelength lemda = 3000 A falls on it. The photoelectrons come out with velocity Photoelectric work function of a metal is 1 eV. Light of wavelength lemda = 3000 A falls on it. The photoelectrons come out with velocity October 14, 2020 Category: Uncategorised [...]
The photoelectric threshold for some material is 200 nm. The material is irradiated with radiations of wavelength 40 nm. The maximum kinetic energy of the emitted photoelectrons is
14
Oct
The photoelectric threshold for some material is 200 nm. The material is irradiated with radiations of wavelength 40 nm. The maximum kinetic energy of the emitted photoelectrons is The photoelectric threshold for some material is 200 nm. The material is irradiated with radiations of wavelength 40 nm. The maximum kinetic energy of the emitted photoelectrons [...]
A triangular system of mass 100 g consisting of 3 wires of length , as shown in figure and length of AO as 4 units , are placced in the magnetic field of 1 T. Th ecurrent of 1A flows through wire AO. The wires are of same material and cross sectional area. In which direction will the system move ?
14
Oct
A triangular system of mass 100 g consisting of 3 wires of length , as shown in figure and length of AO as 4 units , are placced in the magnetic field of 1 T. Th ecurrent of 1A flows through wire AO. The wires are of same material and cross sectional area. In which [...]
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A triangular system of mass 100 g consisting of 3 wires of length ,
are placced in the magnetic field of 1 T. Th ecurrent of 1A flows through wire AO. The wires are of same material and cross sectional area. In which direction will the system move ? ,
as shown in figure and length of AO as 4 units ,
In the previous problem, instead of being stationery , the system enters the magnetic field with a velocity 0.5 m/sec along y – direction . Along which direction the system will move now ?
14
Oct
In the previous problem, instead of being stationery , the system enters the magnetic field with a velocity 0.5 m/sec along y – direction . Along which direction the system will move now ? In the previous problem instead of being stationery the system enters the magnetic field with a velocity 0.5 m/sec along y [...]