Wave Optics
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
Huygens Principle
SubtopicHuygens Principle under Wave Optics for Grade 12 CBSE.
Preview questions (no answers)
- 1.
When a wavefront from a distant star (effectively at infinity) reaches the Earth's atmosphere, it is considered a:
A.Spherical wavefront
B.Plane wavefront
C.Cylindrical wavefront
D.Diverging wavefront
- 2.
According to Huygens Principle, each point on a primary wavefront acts as a source of secondary wavelets. These wavelets travel with a speed:
A.Less than the speed of light in that medium
B.Greater than the speed of light in that medium
C.Equal to the speed of light in that medium
D.That decreases as the wave propagates
- 3.
The shape of the wavefront originating from a point source of light kept at a finite distance in an isotropic medium is:
A.Cylindrical
B.Plane
C.Spherical
D.Elliptical
Download the worksheet for Wave Optics - Huygens Principle to practice offline. It includes additional chapter-level practice questions.
Interference and Young’s Double Slit Experiment
SubtopicInterference and Young’s Double Slit Experiment under Wave Optics for Grade 12 CBSE.
Preview questions (no answers)
- 1.
For constructive interference to occur at a point, the path difference between the two interfering waves must be:
A.An odd multiple of
B.An integral multiple of
C.An even multiple of
D.An odd multiple of
- 2.
The phase difference and the path difference are related by which of the following expressions?
A.B.C.D. - 3.
In Young's Double Slit Experiment (YDSE), if the distance between the two slits is doubled while keeping other parameters constant, the fringe width becomes:
A.Double
B.Half
C.Four times
D.Unchanged
Download the worksheet for Wave Optics - Interference and Young’s Double Slit Experiment to practice offline. It includes additional chapter-level practice questions.
Preview questions (no answers)
- 1.
In the diffraction pattern of a single slit, the intensity of the secondary maxima:
A.Is equal to the intensity of the central maximum
B.Increases as we move away from the central maximum
C.Decreases as we move away from the central maximum
D.Remains constant throughout the pattern
- 2.
In a single slit diffraction experiment, if the width of the slit is doubled, how does the width of the central maximum change?
A.It becomes double
B.It becomes half
C.It becomes four times
D.It remains unchanged
- 3.
Which of the following describes the basic setup for observing Fraunhofer diffraction?
A.The source and screen are at finite distances from the diffracting aperture.
B.The source is at infinity and the screen is at a finite distance.
C.Both the source and the screen are effectively at infinite distances from the aperture.
D.The aperture is placed very close to the eye of the observer.
Download the worksheet for Wave Optics - Diffraction to practice offline. It includes additional chapter-level practice questions.