Physics-
General
Easy
Question
Yellow light is used in single slit diffraction experiment with slit width 0.6 mm. If yellow light is replaced by X-rays then the pattern will reveal
- That the central maxima is narrower
- No diffraction pattern
- More number of fringes
- Less number of fringes
The correct answer is: No diffraction pattern
Diffraction is obtained when the slit width is of the order of wavelength of EM waves (or light). Here wavelength of X-rays (1-100 Å) is very-very lesser than slit width (0.6 mm). Therefore no diffraction pattern will be observed.
Related Questions to study
maths-
In a right angled triangle, the hypotenuse is times the length of the perpendicular drawn from the opposite vertex to the hypotenuse. Then the other two angles are
In a right angled triangle, the hypotenuse is times the length of the perpendicular drawn from the opposite vertex to the hypotenuse. Then the other two angles are
maths-General
physics-
If the figure below represents a parabola, identify the physical quantities representing for constant acceleration
If the figure below represents a parabola, identify the physical quantities representing for constant acceleration
physics-General
physics-
The graph of displacement-time for a body travelling in a straight line is given. We can conclude that
The graph of displacement-time for a body travelling in a straight line is given. We can conclude that
physics-General
physics-
A particle moves along -axis as Which of the following is true
A particle moves along -axis as Which of the following is true
physics-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
maths-
The equation where χ is a variable with real roots, then the interval of p may be any one of the following
The equation where χ is a variable with real roots, then the interval of p may be any one of the following
maths-General
physics-
An engine is moving on a circular track with a constant speed. It is blowing a whistle of frequency The frequency received by an observer standing stationary at the centre of the track is
An engine is moving on a circular track with a constant speed. It is blowing a whistle of frequency The frequency received by an observer standing stationary at the centre of the track is
physics-General
physics-
In Young’s experiment, monochromatic light is used to illuminate the two slits A and B. Interference fringes are observed on a screen placed in front of the slits. Now if a thin glass plate is placed normally in the path of the beam coming from the slit
In Young’s experiment, monochromatic light is used to illuminate the two slits A and B. Interference fringes are observed on a screen placed in front of the slits. Now if a thin glass plate is placed normally in the path of the beam coming from the slit
physics-General
physics-
Figure shows the acceleration-time graphs of a particle. Which of the following represents the corresponding velocity-time graphs?
Figure shows the acceleration-time graphs of a particle. Which of the following represents the corresponding velocity-time graphs?
physics-General
maths-
If and , then the possible values of χ between and are
If and , then the possible values of χ between and are
maths-General
maths-
A) Area bounded by = 2 and coordinate axes
B) Area bounded by and
C) Area bounded by between x=0,x=1,x- axis
D) Area bounded by and y=2x Arrange the above statements in the ascending order of areas.
A) Area bounded by = 2 and coordinate axes
B) Area bounded by and
C) Area bounded by between x=0,x=1,x- axis
D) Area bounded by and y=2x Arrange the above statements in the ascending order of areas.
maths-General
Physics-
Velocity-time - graph for a moving object is shown in the figure. Total displacement of the object during the same interval when there is non-zero acceleration and retardation is
Velocity-time - graph for a moving object is shown in the figure. Total displacement of the object during the same interval when there is non-zero acceleration and retardation is
Physics-General
physics-
A particle moves along the sides of a square of side wuth a velocity of . Its average velocity is
A particle moves along the sides of a square of side wuth a velocity of . Its average velocity is
physics-General
physics-
The velocity-time graph of a body moving in a straight line is shown in the figure. The displacement and distance travelled by the body in are respectively
The velocity-time graph of a body moving in a straight line is shown in the figure. The displacement and distance travelled by the body in are respectively
physics-General
maths-
The area bounded by , Y-axis and the line y=e is
The area bounded by , Y-axis and the line y=e is
maths-General