Physics-
General
Easy
Question
The correct graph between the maximum energy of a photoelectron and the inverse of wavelength of the incident radiation is given by the curve
- A
- B
- C
- None of the above
The correct answer is: A
i.e. graph between 
and 
will be straight line having slope (hc) and intercept 
on – KE axis.
Related Questions to study
Physics-
The intensity distribution of X-rays from two coolidge tubes operated on different voltages V1 and V2 and using different target materials of atomic numbers Z1 and Z2 is shown in the figure. Which one of the following inequalities is true?
The intensity distribution of X-rays from two coolidge tubes operated on different voltages V1 and V2 and using different target materials of atomic numbers Z1 and Z2 is shown in the figure. Which one of the following inequalities is true?
Physics-General
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Figure represents the graph of photo current I versus applied voltage (V). The maximum energy of the emitted photoelectrons is
Figure represents the graph of photo current I versus applied voltage (V). The maximum energy of the emitted photoelectrons is
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Figure represents a graph of kinetic energy (K) of photoelectrons (in eV) and frequency (v) for a metal used as cathode in photoelectric experiment. The work function of metal is
Figure represents a graph of kinetic energy (K) of photoelectrons (in eV) and frequency (v) for a metal used as cathode in photoelectric experiment. The work function of metal is
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The stopping potential 
versus frequency (n) plot of a substance is shown in figure the threshold wave length is
The stopping potential versus frequency (n) plot of a substance is shown in figure the threshold wave length is
Physics-General
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A point source of light is used in an experiment on photoelectric effect. Which of the following curves best represents the variation of photo current (i) with distance (d) of the source from the emitter
A point source of light is used in an experiment on photoelectric effect. Which of the following curves best represents the variation of photo current (i) with distance (d) of the source from the emitter
Physics-General
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In the following diagram if V2 > V1 then
In the following diagram if V2 > V1 then
Physics-General
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The value of stopping potential in the following diagram
The value of stopping potential in the following diagram
Physics-General
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The figure represents the observed intensity of X-rays emitted by an X-ray tube as a function of wavelength. The sharp peaks A and B denote
The figure represents the observed intensity of X-rays emitted by an X-ray tube as a function of wavelength. The sharp peaks A and B denote
Physics-General
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The intensity of X-rays from a Coolidge tube is plotted against wavelength as shown in the figure. The minimum wavelength found is 
and the wavelength of the 
line is 
. As the accelerating voltage is increased
The intensity of X-rays from a Coolidge tube is plotted against wavelength as shown in the figure. The minimum wavelength found is and the wavelength of the line is . As the accelerating voltage is increased
Physics-General
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Statement–I : When two vibrating tuning forks have f1 = 300 Hz and f2 = 350 Hz and held close to each other; beats cannot be heard
Statement–II : The principle of superposition is valid only when f1 – f2 < 10 Hz
Statement–I : When two vibrating tuning forks have f1 = 300 Hz and f2 = 350 Hz and held close to each other; beats cannot be heard
Statement–II : The principle of superposition is valid only when f1 – f2 < 10 Hz
Physics-General
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Statement–I : The flash of lightening is seen before the sound of thunder is heard
Statement–II : The sound of thunder is produced after the flash of lightening
Statement–I : The flash of lightening is seen before the sound of thunder is heard
Statement–II : The sound of thunder is produced after the flash of lightening
Physics-General
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Statement–I : The superposition of the waves y1 = A sin (kx –wt) and y2 = 3A sin(kx + wt) is a pure standing wave plus a travelling wave moving in the negative direction along X–axis
Statement–II : The resultant of y1 & y2 is y=y1 +y2 = 2A sin kx cos wt+2A sin (kx+wt)
Statement–I : The superposition of the waves y1 = A sin (kx –wt) and y2 = 3A sin(kx + wt) is a pure standing wave plus a travelling wave moving in the negative direction along X–axis
Statement–II : The resultant of y1 & y2 is y=y1 +y2 = 2A sin kx cos wt+2A sin (kx+wt)
Physics-General
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Four open organ pipes of different length and different gases at same temperature as shown in figure. Let fA , fB , fC and fD be their fundamental frequencies then:–
Four open organ pipes of different length and different gases at same temperature as shown in figure. Let fA , fB , fC and fD be their fundamental frequencies then:–
Physics-General
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A clamped string is oscillating in nth harmonic, then:–
A clamped string is oscillating in nth harmonic, then:–
Physics-General
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Two trains A and B are moving in the same direction with velocities 30 m/s and 10 m/s respectively, B is behind from A, blows a horn of frequency 450 Hz. Then the apparent frequency heard by B is (The velocity of sound is 330 m/s):–
Two trains A and B are moving in the same direction with velocities 30 m/s and 10 m/s respectively, B is behind from A, blows a horn of frequency 450 Hz. Then the apparent frequency heard by B is (The velocity of sound is 330 m/s):–
Physics-General
