Physics-
General
Easy
Question
The log-log graph between the energy E of an electron and its de-Broglie wavelength 
will be
The correct answer is:
. Taking log of both sides 
Þ
This is the equation of straight line having slope (–1/2) and positive intercept on log l axis
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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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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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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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The continuous x-ray spectrum obtained from a Coolidge tube is of the form
The continuous x-ray spectrum obtained from a Coolidge tube is of the form
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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
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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
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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
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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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on relative change of momentum with respect to surface. Let any instant the velocity of surface is u, then above equation becomes – null Based on above concept, in the below given figure, if the cart is frictionless and free to move in horizontal direction, then answer the following :
Given cross-section area of jet null velocity of jet null, density of liquid null of cart null. In the above problem, what is the acceleration of cart at this instant –
on relative change of momentum with respect to surface. Let any instant the velocity of surface is u, then above equation becomes – null Based on above concept, in the below given figure, if the cart is frictionless and free to move in horizontal direction, then answer the following :
Given cross-section area of jet null velocity of jet null, density of liquid null of cart null. In the above problem, what is the acceleration of cart at this instant –
Physics-General
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on relative change of momentum with respect to surface. Let any instant the velocity of surface is u, then above equation becomes – null Based on above concept, in the below given figure, if the cart is frictionless and free to move in horizontal direction, then answer the following :
Given cross-section area of jet null velocity of jet null, density of liquid null of cart null. Velocity of cart at t = 10 sec. is equal to :
on relative change of momentum with respect to surface. Let any instant the velocity of surface is u, then above equation becomes – null Based on above concept, in the below given figure, if the cart is frictionless and free to move in horizontal direction, then answer the following :
Given cross-section area of jet null velocity of jet null, density of liquid null of cart null. Velocity of cart at t = 10 sec. is equal to :
Physics-General
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on relative change of momentum with respect to surface. Let any instant the velocity of surface is u, then above equation becomes – null Based on above concept, in the below given figure, if the cart is frictionless and free to move in horizontal direction, then answer the following :
Given cross-section area of jet null velocity of jet null, density of liquid null of cart null. Initially null the force on the cart is equal to :
on relative change of momentum with respect to surface. Let any instant the velocity of surface is u, then above equation becomes – null Based on above concept, in the below given figure, if the cart is frictionless and free to move in horizontal direction, then answer the following :
Given cross-section area of jet null velocity of jet null, density of liquid null of cart null. Initially null the force on the cart is equal to :
Physics-General
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One mole of an ideal monoatomic gas undergoes a cyclic process as shown in figure. Temperature at point 1 = 300 K and process 2-3 is isothermal. Net work done by gas in complete cycle is
One mole of an ideal monoatomic gas undergoes a cyclic process as shown in figure. Temperature at point 1 = 300 K and process 2-3 is isothermal. Net work done by gas in complete cycle is
Physics-General
