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From the figure describing photoelectric effect we may infer correctly that
From the figure describing photoelectric effect we may infer correctly that
Physics-General
Physics-
In Thomson spectrograph experiment, four positive ions P,Q,R and S are situated on Y-X curve a shown in the figure
In Thomson spectrograph experiment, four positive ions P,Q,R and S are situated on Y-X curve a shown in the figure
Physics-General
Physics-
In a parabola spectrograph, the velocities of four positive ions P,Q,R and S are v1, v2, v3 and v4 respectively
In a parabola spectrograph, the velocities of four positive ions P,Q,R and S are v1, v2, v3 and v4 respectively
Physics-General
Physics-
The maximum value of stopping potential in the following diagram is
The maximum value of stopping potential in the following diagram is
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Physics-
In the diagram a graph between the intensity of X-rays emitted by a molybdenum target and the wavelength is shown, when electrons of 30 keV are incident on the target. In the graph one peak is of 
line and the other peak is of 
line
In the diagram a graph between the intensity of X-rays emitted by a molybdenum target and the wavelength is shown, when electrons of 30 keV are incident on the target. In the graph one peak is of line and the other peak is of line
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Physics-
The graph between the square root of the frequency of a specific line of characteristic spectrum of X-rays and the atomic number of the target will be
The graph between the square root of the frequency of a specific line of characteristic spectrum of X-rays and the atomic number of the target will be
Physics-General
Physics-
In the graph given below. If the slope is 
V-sec, then value of ‘h’ should be
In the graph given below. If the slope is V-sec, then value of ‘h’ should be
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Physics-
The variation of wavelength 
of the line with atomic number Z of the target is shown by the following curve of
The variation of wavelength of the line with atomic number Z of the target is shown by the following curve of
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Physics-
The dependence of the short wavelength limit 
on the accelerating potential V is represented by the curve of figure
The dependence of the short wavelength limit on the accelerating potential V is represented by the curve of figure
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Physics-
The correct graph between the maximum energy of a photoelectron and the inverse of wavelength of the incident radiation is given by the curve
The correct graph between the maximum energy of a photoelectron and the inverse of wavelength of the incident radiation is given by the curve
Physics-General
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
Physics-
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
Physics-General
Physics-
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
Physics-General
Physics-
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
Physics-
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
