Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions)
A gas hydrogen like atoms can absorb radiations of 68eV. Consequently, the atoms emit radiations of only three different wavelengths. All the wavelengths are equal or smaller than that of the absorbed photon. (a) Determine the initial state of the gas atoms. (b) Identify the gas atoms. (c) Find the minimum wavelength of the emitted radiation. (d) Find the ionization energy and the respective wavelength for the gas atoms.
25
Aug
A gas hydrogen like atoms can absorb radiations of 68eV. Consequently, the atoms emit radiations of only three different wavelengths. All the wavelengths are equal or smaller than that of the absorbed photon. (a) Determine the initial state of the gas atoms. (b) Identify the gas atoms. (c) Find the minimum wavelength of the emitted [...]
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A gas hydrogen like atoms can absorb radiations of 68eV. Consequently ,
A is ahead of B in phase by 66^@. If the observation be taken from point P ,
Among the two interfering monochromatic sources A and B ,
such that PB-PA=lambda//4. Then the phase difference between the waves from A and B reaching P is ,
P is small angled prism of angle 3 made of a material of refractive index 1.5. A ray of light is incident normally to the mirror as shown in figure. M is a plane mirror. The angle of deviation for the ray reflected from the mirror M with respect to the incident ray is :
25
Aug
P is small angled prism of angle 3 made of a material of refractive index 1.5. A ray of light is incident normally to the mirror as shown in figure. M is a plane mirror. The angle of deviation for the ray reflected from the mirror M with respect to the incident ray is : [...]
A scale is adjusted to zero . Particles fall from a height h = 250 m before colliding with the balance pan of the scale . The collisions are elastic . If each particle has a mass of m = 100 mg and collisions occur at the rate n = 1000 particles per second , what is the scale reading in kg ?
25
Aug
A scale is adjusted to zero . Particles fall from a height h = 250 m before colliding with the balance pan of the scale . The collisions are elastic . If each particle has a mass of m = 100 mg and collisions occur at the rate n = 1000 particles per second , [...]
Among the two interfering monochromatic sources A and B, A is ahead of B in phase by 66. If the observation be taken from point P, such that PB – PA = lambda/4. Then the phase difference between the waves from A and B reaching P is
25
Aug
Among the two interfering monochromatic sources A and B, A is ahead of B in phase by 66. If the observation be taken from point P, such that PB – PA = lambda/4. Then the phase difference between the waves from A and B reaching P is A is ahead of B in phase by [...]
A railroad flatcar of mass M can roll without friction along a straight horizontal track. Initially, a man of mass ‘m’ is standing on the car, which is at rest. What is the velocity of the car if man runs to the left so that his speed relative to the car is vrel.
25
Aug
A railroad flatcar of mass M can roll without friction along a straight horizontal track. Initially, a man of mass ‘m’ is standing on the car, which is at rest. What is the velocity of the car if man runs to the left so that his speed relative to the car is vrel. a man [...]
The ratio of the intensity at the centre of a bright fringe to the intensity at a point one-quarter of the distance between two fringes from the centre is :
25
Aug
The ratio of the intensity at the centre of a bright fringe to the intensity at a point one-quarter of the distance between two fringes from the centre is : The ratio of the intensity at the centre of a bright fringe to the intensity at a point one-quarter of the distance between two fringes [...]
Block M slides down on frictionless incline as shown. The minimum friction coefficient so that m does not slide with respect to M would be :
25
Aug
Block M slides down on frictionless incline as shown. The minimum friction coefficient so that m does not slide with respect to M would be : Block M slides down on frictionless incline as shown. The minimum friction coefficient so that m does not slide with respect to M would be : August 25, 2020 [...]
In Young’s double slit experiment, the fringes are displaced by a distance x when a glass plate of refractive index 1.5 is introduced in the path of one of the beams. When this plate is replaced by another plate of the same thickness, the shift of fringes is (3/2) x. The refractive index of the second plate is
25
Aug
In Young’s double slit experiment, the fringes are displaced by a distance x when a glass plate of refractive index 1.5 is introduced in the path of one of the beams. When this plate is replaced by another plate of the same thickness, the shift of fringes is (3/2) x. The refractive index of the [...]
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In Young's double slit experiment ,
the fringes are displaced by a distance x when a glass plate of refractive index 1.5 is introduced in the path of one of the beams. When this plate is replaced by another plate of the same thickness ,
the shift of fringes is (3/2) x. The refractive index of the second plate is ,
A machine gun fires bullets of 50 gm at the speed of 1000 m/sec. If an average force of 200 N is exerted on the gun, the maximum number of bullets fired per minutes is:
25
Aug
A machine gun fires bullets of 50 gm at the speed of 1000 m/sec. If an average force of 200 N is exerted on the gun, the maximum number of bullets fired per minutes is: A machine gun fires bullets of 50 gm at the speed of 1000 m/sec. If an average force of 200 [...]
When entire Young’s double slit apparatus is immersed in a liquid the fringe width decreases by 20%. The refractive index of the liquid is
25
Aug
When entire Young’s double slit apparatus is immersed in a liquid the fringe width decreases by 20%. The refractive index of the liquid is When entire Young's double slit apparatus is immersed in a liquid the fringe width decreases by 20^(@). The refractive index of the liquid is August 25, 2020 Category: Uncategorised (JEE Advanced [...]