MCQ
Coherent sources are those sources for which
- APhase difference remain constant
- BFrequency remains constant
- ✓Both phase difference and frequency remains constant
- DNone of these
✓
Answer
Correct option: C.
Both phase difference and frequency remains constant
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
The relationship between Young's modulus $Y$, Bulk modulus $K$ and modulus of rigidity $\eta$ is
→The wavelength of radiation emitted by a body depends upon
Which one of the series of hydrogen spectrum is in the visible region
When light emitted by a white hot solid is passed through a sodium flame, the spectrum of the emergent light will show
The range of a projectile for a given initial velocity is maximum when the angle of projection is $45^{\circ}$. The range will be minimum, if the angle of projection is
→The escape velocity from earth is $v_{e s}$. A body is projected with velocity $2 v_{e s}$ with what constant velocity will it move in the inter planetary space
→In a single slit diffraction experiment first minimum for red light $(660 nm )$ coincides with first maximum of some other wavelength $\lambda^{\prime}$. The value of $\lambda^{\prime}$ is
→A system is taken through a cyclic process represented by a circle as shown. The heat absorbed by the system is
The thermal conductivity of a material in CGS system is 0.4. In steady state, the rate of flow of heat $10 \mathrm{cal} / \mathrm{sec}-\mathrm{cm}$, then the thermal gradient will be
→Efficiency of Carnot engine is $100 \%$ if
→