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An electron from various excited states of hydrogen atom emit radiation to come to the ground state. Let lemda n, lemda g be the de Broglie wavelength of the electron in the nth state and the ground
17
Oct
An electron from various excited states of hydrogen atom emit radiation to come to the ground state. Let lemda n, lemda g be the de Broglie wavelength of the electron in the nth state and the ground An electron from various excited states of hydrogen atom emit radiation to come to the ground state. Let [...]
1. Find the surface area of a sphere of radius: (i) 10.5cm
17
Oct
1. Find the surface area of a sphere of radius: (i) 10.5cm 1. Find the surface area of a sphere of radius: (i) 10.5cm October 17, 2020 Category: Chapter 13 - Surface Areas and Volumes , Maths , NCERT Class 9 ,
An electron beam is accelerated by a potential difference V to hit a metallic target to produce X-rays. It produces continuous as well as characteristic X-rays. If lemda min is the smallest possible
17
Oct
An electron beam is accelerated by a potential difference V to hit a metallic target to produce X-rays. It produces continuous as well as characteristic X-rays. If lemda min is the smallest possible An electron beam is accelerated by a potential difference V to hit a metallic target to produce X-rays. It produces continuous as [...]
8. A bus stop is barricaded from the remaining part of the road, by using 50 hollow cones made of recycled cardboard. Each cone has a base diameter of 40 cm and height 1 m. If the outer side of each of the cones is to be painted and the cost of painting is Rs. 12 per m^2, what will be the cost of painting all these cones? (Use π = 3.14 and take √(1.04) =1.02)
17
Oct
8. A bus stop is barricaded from the remaining part of the road, by using 50 hollow cones made of recycled cardboard. Each cone has a base diameter of 40 cm and height 1 m. If the outer side of each of the cones is to be painted and the cost of painting is Rs. [...]
Some energy levels of molecule are shown in the figure. The ratio of the wavelengths r = lemda 1/ lemda 2, is given by
17
Oct
Some energy levels of molecule are shown in the figure. The ratio of the wavelengths r = lemda 1/ lemda 2, is given by is given by Some energy levels of molecule are shown in the figure. The ratio of the wavelengths r = lemda 1/ lemda 2 October 17, 2020 Category: Uncategorised (JEE Advanced [...]
As an electron makes a transition from an excited state to the ground state of a hydrogen-like atom/ion (1) its kinetic energy increased but potential energy and total energy decreases
17
Oct
As an electron makes a transition from an excited state to the ground state of a hydrogen-like atom/ion (1) its kinetic energy increased but potential energy and total energy decreases As an electron makes a transition from an excited state to the ground state of a hydrogen-like atom/ion (1) its kinetic energy increased but potential [...]
The radiation corresponding to 3 * 2 transition of hydrogen atoms falls on a metal surface to produce photoelectrons. These electrons are made to enter a magnetic field of 3 * 10^-4 T. If the radius
17
Oct
The radiation corresponding to 3 * 2 transition of hydrogen atoms falls on a metal surface to produce photoelectrons. These electrons are made to enter a magnetic field of 3 * 10^-4 T. If the radius The radiation corresponding to 3 * 2 transition of hydrogen atoms falls on a metal surface to produce photoelectrons. [...]
A cylindrical wire of radius R is carrying current uniformly distributed current i over its cross section . If a circular loop of radius r is taken as amperian loop, then the variation value of phi B.dl over this loop with radius r of loop will be best represented by
17
Oct
A cylindrical wire of radius R is carrying current uniformly distributed current i over its cross section . If a circular loop of radius r is taken as amperian loop, then the variation value of phi B.dl over this loop with radius r of loop will be best represented by A cylindrical wire of radius [...]
7. A joker’s cap is in the form of right circular cone of base radius 7 cm and height 24cm. Find the area of the sheet required to make 10 such caps.
17
Oct
7. A joker’s cap is in the form of right circular cone of base radius 7 cm and height 24cm. Find the area of the sheet required to make 10 such caps. 7. A joker’s cap is in the form of right circular cone of base radius 7 cm and height 24cm. Find the area [...]
Axis of a solid cylinder of infinite length and radius R lies along y axis. It carries a uniformly distributed current i along +y direction . Magnetic field at a point ( R/2 , Y, R/2 ) is
17
Oct
Axis of a solid cylinder of infinite length and radius R lies along y axis. It carries a uniformly distributed current i along +y direction . Magnetic field at a point ( R/2 , Y, R/2 ) is Axis of a solid cylinder of infinite length and radius R lies along y axis. It carries [...]