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Find out the number of waves made by a Bohr electron in one complete revolution in its third orbit. Find out the number of waves made by a Bohr electron in one complete revolution in its third orbit. November 9, 2020 Category: Chapter 2 - Atomic Structure , Chemistry , JEE Adv and Mains Chemistry [...]

Iodine molecule dissociates into atoms after absorbing light of wavelength 4500 A˚ . If one quantum of light is absorbed by each molecule, calculate the kinetic energy of the iodine atoms. [Given B.E. of I2 = 240 kJ/mol ^-1) calculate the kinetic energy of the iodine atoms. [Given B.E. of I2 = 240 kJ/mol ^-1) [...]

Calculate the wave number for the shortest wavelength transition in Balmer series of atomic hydrogen. Calculate the wave number for the shortest wavelength transition in Balmer series of atomic hydrogen. November 9, 2020 Category: Chapter 2 - Atomic Structure , Chemistry , JEE Adv and Mains Chemistry 41 Years Solved Video Solutions 1979 - 2019 [...]

Consider the hydrogen atom to be a proton embedded in a cavity of radius a0 (Bohr radius) whose charge is neutralized by the addition of an electron to the cavity in vacuum infinitely slowly. Estimate the average total energy of an electron in its ground state in a hydrogen atom as the work done in [...]

The radius of curvature of the convex face of a plano-convex lens is 15 cm and the refractive index of the material of the lens is 1.4. Then, the power of the lens in dioptre is the power of the lens in dioptre is The radius of curvature of the convex face of a plano-convex [...]

Two plano-concave lenses (1 and 2) of glass of refractive index 1.5 have radii of curvature 25 cm and 20 cm. They are placed in contact with their curved surface towards each other and the space between them is filled with liquid of refractive index 4/3. Then the combination is The focal length of a [...]

The focal length of a convex lens is 10cm and its refractive index is 1.5 is placed in liquid of refractive index 1.25 then its focal length will be The focal length of a convex lens is 10cm and its refractive index is 1.5 is placed in liquid of refractive index 1.25 then its focal [...]

What is the refractive index of material of a planoconvex lens, if the radius of curvature of the convex surface is 10 cm and focal length of the lens is 30 cm ? if the radius of curvature of the convex surface is 10 cm and focal length of the lens is 30 cm ? [...]

A students plots a graph between inverse of magnification 1/m produced by a convex thin lens and the object distance u as shown in figure. What was the focal length of the lens used? A students plots a graph between inverse of magnification 1/m produced by a convex thin lens and the object distance u [...]

A hollow double concave lens is made of very thin transparent material. It can be filled with air or either of two liquids L1 or L2 ​having refractive indices μ1 ​and μ2 respectively (μ2 > μ1 ​> 1). The lens will diverge a parallel beam of light if it is filled with Which one of [...]