Physics

Photo electrons are liberated by ultraviolet light of wavelength 3000Å from a metalic surface for which the photoelectric threshold wavelength is 4000Å. Calculate the de Broglie wavelength of electrons emitted with maximum kinetic energy is 1. What transition in the hydrogen spectrum would have the same wavelength as the Balmer transition n=4 to n=2 of [...]

The electrons are filled in orbitals containing following quantum numbers n and l. The order of increasing energy is The electrons are filled in orbitals containing following quantum numbers n and l. The order of increasing energy is November 9, 2020 Category: AIIMS Last 24 Years Solved 1996 - 2019 Physics and Chemistry Video Solutions [...]

1. What transition in the hydrogen spectrum would have the same wavelength as the Balmer transition, n=4 to n=2 of He + spectrum? 1. What transition in the hydrogen spectrum would have the same wavelength as the Balmer transition n=4 to n=2 of He + spectrum? November 9, 2020 Category: AIIMS Last 24 Years Solved [...]

If a spring has time period T, and is cut into n equal parts, then the time period of each part will be: and is cut into n equal parts If a spring has time period T then the time period of each part will be: November 7, 2020 Category: Arihant Physics by D.C Pandey [...]

In a simple harmonic oscillator, at the mean position at the mean position In a simple harmonic oscillator November 7, 2020 Category: Arihant Physics by D.C Pandey , Chapter 16 - Waves , Volume 1 ,

A child swinging on a swing in sitting position, stands up then the time period of the swing will A child swinging on a swing in sitting position stands up then the time period of the swing will November 7, 2020 Category: Arihant Physics by D.C Pandey , Chapter 16 - Waves , Volume 1 [...]

The displacement of a particle varies according to the relation x=4(cosπt+sinπt). The amplitude of the particle is: The displacement of a particle varies according to the relation x=4(cosπt+sinπt). The amplitude of the particle is: November 7, 2020 Category: Arihant Physics by D.C Pandey , Chapter 16 - Waves , Volume 1 ,

A body executes simple harmonic motion. The potential energy (P.E), the kinetic energy (K.E) and energy (T.E) are measured as a function of displacement x. Which of the following statements is true? A body executes simple harmonic motion. The potential energy (P.E.) the kinetic energy (K.E) and energy (T.E) are measured as a function of [...]

A simple pendulum is executing simple harmonic motion Is increased by 21%, the percentage increase in the time period of the pendulum of increased length is A simple pendulum is executing simple harmonic motion Is increased by 21% the percentage increase in the time period of the pendulum of increased length is November 7, 2020 [...]

In the experiment for the determination of the speed of sound in air using the resonance column method, the length of the air column that resonates in the fundamental mode, with a tuning fork is 0.1 m. When this length is changed to 0.35 m, the same tuning fork resonates with the first overtone. Calculate [...]