Structure of At...

What is the wavelength of a car with a mass of 1.3 × 10⁴ g moving at a speed of 1.0 × 10³ cm/sec?
(Planck’s constant 6.63 × 10⁻²⁷ erg sec.)

The uncertainty in the position of an electron (mass = 9.1 × 10⁻²⁸ g) moving with a velocity of 3.0 × 10⁴ cms⁻¹ accurate upto 0.011% will be

A proton is about 1840 times heavier than an electron. When it is accelerated by a potential difference of 1 kV, its kinetic energy will be

Potential energy of Li²⁺ electron is

If λ₀ is the threshold wavelength for photoelectric emission, λ the wavelength of light falling on the surface of a metal and m the mass of the electron, then the velocity of ejected electron is given by

When electron transition occurs from higher energy state to a lower energy state with energy difference equal to ∆E electron volts, the wavelength of line emitted is approximately equal to

A certain metal when irradiated by light (v = 3.2 × 10¹⁶Hz) emits photoelectrons with twice kinetic energy as did photo electrons when the same metal is irradiated by light (v = 2 × 10¹⁶Hz). The 0 v of metal is

The correct Schrodinger’s wave equation for an electron with E as total energy and V as potential energy is

The units for equation are

The transition in He⁺ ion that would have the same wave number as the first Lyman line in hydrogen spectrum is