Physics-
General
Easy

Question

In a characteristic X– ray spectra of some atom superimposed on continuous X– ray spectra:

  1. P represents K subscript alpha end subscript line    
  2. frL is constant for all orbits    
  3. f2rL is constant for all orbits    
  4. frL2 is constant for all orbits    

The correct answer is: frL is constant for all orbits

Related Questions to study

General
Physics-

When a hydrogen atom, initially at rest emits, a photon resulting in transition n = 5 rightwards arrow n = 1, its recoil speed is about

When a hydrogen atom, initially at rest emits, a photon resulting in transition n = 5 rightwards arrow n = 1, its recoil speed is about

Physics-General
General
Physics-

Electron in a hydrogen atom is replaced by an identically charged particle muon with mass 207 times that of electron. Now the radius of K shell will be

Electron in a hydrogen atom is replaced by an identically charged particle muon with mass 207 times that of electron. Now the radius of K shell will be

Physics-General
General
physics-

Consider the following electronic energy level diagram of H-atom: Photons associated with shortest and longest wavelengths would be emitted from the atom by the transitions labelled:

Consider the following electronic energy level diagram of H-atom: Photons associated with shortest and longest wavelengths would be emitted from the atom by the transitions labelled:

physics-General
parallel
General
Physics-

In a photoelectric experiment, electrons are ejected from metals X and Y by light of intensity I and frequency f. The potential difference V required to stop the electrons is measured for various frequencies. If Y has a greater work function than X; which one of the following graphs best illustrates the expected results?

In a photoelectric experiment, electrons are ejected from metals X and Y by light of intensity I and frequency f. The potential difference V required to stop the electrons is measured for various frequencies. If Y has a greater work function than X; which one of the following graphs best illustrates the expected results?

Physics-General
General
physics-

In a photoelectric experiment, the potential difference V that must be maintained between the illuminated surface and the collector so as just to prevent any electron from reaching the collector is determined for different frequencies f of the incident illumination. The graph obtained is shown. The maximum kinetic energy of the electrons emitted at frequency f1 is

In a photoelectric experiment, the potential difference V that must be maintained between the illuminated surface and the collector so as just to prevent any electron from reaching the collector is determined for different frequencies f of the incident illumination. The graph obtained is shown. The maximum kinetic energy of the electrons emitted at frequency f1 is

physics-General
General
Maths-

text If  end text I equals stretchy integral subscript 1 divided by e end subscript superscript e end superscript   vertical line l o g invisible function application x vertical line fraction numerator d x over denominator x to the power of 2 end exponent end fraction text  , end text then I equals

text If  end text I equals stretchy integral subscript 1 divided by e end subscript superscript e end superscript   vertical line l o g invisible function application x vertical line fraction numerator d x over denominator x to the power of 2 end exponent end fraction text  , end text then I equals

Maths-General
parallel
General
Maths-

integral fraction numerator e to the power of x end exponent left parenthesis x minus 1 right parenthesis left parenthesis x minus l n invisible function application x right parenthesis over denominator x to the power of 2 end exponent end fractiondx is equal to

integral fraction numerator e to the power of x end exponent left parenthesis x minus 1 right parenthesis left parenthesis x minus l n invisible function application x right parenthesis over denominator x to the power of 2 end exponent end fractiondx is equal to

Maths-General
General
Maths-

integral x to the power of 3 end exponent square root of fraction numerator 1 plus x to the power of 2 end exponent over denominator 1 minus x to the power of 2 end exponent end fraction end root d x equals A square root of 1 minus x to the power of 4 end exponent end root minus B x to the power of 2 end exponent square root of 1 minus x to the power of 4 end exponent end root plus C s i n to the power of negative 1 end exponent invisible function application x to the power of 2 end exponent plus D comma text end textthen A+B+C is equal to

integral x to the power of 3 end exponent square root of fraction numerator 1 plus x to the power of 2 end exponent over denominator 1 minus x to the power of 2 end exponent end fraction end root d x equals A square root of 1 minus x to the power of 4 end exponent end root minus B x to the power of 2 end exponent square root of 1 minus x to the power of 4 end exponent end root plus C s i n to the power of negative 1 end exponent invisible function application x to the power of 2 end exponent plus D comma text end textthen A+B+C is equal to

Maths-General
General
Physics-

A body of mass 10 kg is moving with a constant velocity of 10 m/s. When a constant force acts for 4 seconds on it, it moves with a velocity 2 m/sec in the opposite direction. The acceleration produced in it is :

A body of mass 10 kg is moving with a constant velocity of 10 m/s. When a constant force acts for 4 seconds on it, it moves with a velocity 2 m/sec in the opposite direction. The acceleration produced in it is :

Physics-General
parallel
General
physics-

A particle moves along the sides AB, BC, CD of a square of side 25m with a velocity of 15 ms–1 Its average velocity is :

A particle moves along the sides AB, BC, CD of a square of side 25m with a velocity of 15 ms–1 Its average velocity is :

physics-General
General
physics-

Acceleration–time graph of a body is shown. The corresponding velocity–time graph of the same body is :

Acceleration–time graph of a body is shown. The corresponding velocity–time graph of the same body is :

physics-General
General
physics-

The graph of displacement u/s time is,

Its corresponding velocity–time graph will be :

The graph of displacement u/s time is,

Its corresponding velocity–time graph will be :

physics-General
parallel
General
physics-

Figure (i) and (ii) below show the displacement–time graphs of two particles moving along the x–axis. We can say that :
i) 
ii) 

Figure (i) and (ii) below show the displacement–time graphs of two particles moving along the x–axis. We can say that :
i) 
ii) 

physics-General
General
physics-

The displacement versus time graph for a body moving in a straight line is shown in figure. Which of the following regions represents the motion when no force is acting on the body :

The displacement versus time graph for a body moving in a straight line is shown in figure. Which of the following regions represents the motion when no force is acting on the body :

physics-General
General
physics-

The displacement of a particle as a function of time is shown in the figure. The figure shows that

The displacement of a particle as a function of time is shown in the figure. The figure shows that

physics-General
parallel

card img

With Turito Academy.

card img

With Turito Foundation.

card img

Get an Expert Advice From Turito.

Turito Academy

card img

With Turito Academy.

Test Prep

card img

With Turito Foundation.