Related Questions

As the optical activity changes with the wavelength of light, it is necessary not to use monochromatic light to measure optical activity.
3D – chiral metamaterials exhibit polarization effects such as optical activity but refrain from displaying circular dichroism.
Consider the following statements.
1. Fibre optics is based on the principle of total internal reflection.
2. In an optical fibre communication system, power consumption is extremely low
3. Optical fibre communications are free from radio frequency interference.
4. In India, Reliance Group of Industries is engaged in the manufacture of the optical fibre.
Which of these statements are correct?
A planar LED is fabricated from GaAs is having a optical power emitted is 0.018% of optical power generated internally which is 0.018% of optical power generated internally which is 0.6 P. Determine external power efficiency.
Two dielectric materials A and B exhibit both ionic and orientational polarizabilities. The variation of their susceptibilities $$\chi \left( { = {\varepsilon _r} - 1} \right)$$   with temperature T is shown in the figure, where $${\varepsilon _r}$$ is the relative dielectric constant. It can be inferred from the figure that
Solid State Physics mcq question image
Assertion (A): All the systems which exhibit overshoot in transient response will also exhibit resonance peak in frequency response. Reason (R): Large resonance peak in frequency response corresponds to a large overshoot in transient response.
All members of a homogeneous series can be represented by the same general formula. Choose the wrong formula from the following.
Alkane - CnH2n + 2
Alkyne - CnH2n + 1
Alkine - CnH2n - 2
The artificial activity which indicates that an activity following it, cannot be started unless the preceding activity is complete, is known as
The artificial activity, which indicates that an activity following it cannot be started unless, the preceding activity is complete, is known as
Consider the following statements.
1. In PERT, it is assumed that the activity times follow the beta distribution.
2. In CPM, two time and cost estimates are made for each activity, which are called the optimistic and pessimistic estimates.
3. Time is the only variable used in PERT.
4. While in PERT the emphasise is on event, in CPM the emphasise is on activity.