Generate Quiz 688D9004898E5

Despite the emission of photoelectrons, no photoelectric current is generated because they are immobile or lack kinetic energy.

hv = W ( work function = hv0) +Ek where Ek =0 and v=v0

The energy associated with a metal’s threshold frequency is its work function. Albert Einstein explained the photoelectric effect using a metal’s work function. The work function and the incident photon frequency determined the maximum kinetic energy of the ejected electrons. K.E.max = hf – φ. The minimum bond energy or the bond energy of the surface electrons can be understood as the metal’s work function.

In reality, a beta particle is a rapidly moving electron. A beta particle, such as an electron or positron (positively charged electron), is released by a nucleus during beta decay. High speeds are used to emit these particles.

Measurements and objective observations of natural phenomena are essential to physics.

Not on the study of chemical solutions, which is what chemistry is all about.

C is the right choice.

Angular momentum is comparable to Planck’s constant.

Moreover, linear momentum multiplied by distance has the same units as angular momentum. Thus, we can determine the angular momentum’s dimensions. Therefore, the dimensions of angular momentum and Planck’s constant are equal.

Planck’s constant is measured in kgm2s−1.

kgm2s−1 is the SI unit for angular momentum.

They therefore use the same SI units.

The special theory of relativity does not lead to Option B. Although the theory of relativity makes use of the concept of space-time transformation, it is not a direct outcome of the theory. The theory’s other possibilities include mass variation, time dilation, and length contraction.

The process by which a molecule, atom, or subatomic particle moves from an excited energy state to a lower energy state (such as its ground state) and releases a quantized quantity of energy in the form of a photon is known as spontaneous emission.

From the longest to the shortest wavelengths, the electromagnetic spectrum consists of radio waves, microwaves, infrared, ultraviolet, X-rays, gamma rays, and optical/visible light.

->v=fλ 3 x 108=f x (1.0 X 10-10) f=3 x 108/1.0 X 10-10=3 x 1018

->E=hf E=(6.62607004 × 10-34 )*(3 x 1018)=1.99 x 10-15

An idealized object that absorbs all electromagnetic radiation that it encounters is called a black body. Depending on its temperature, it then continuously emits thermal radiation.