A single ray traverses a glass plate (thickness = t) with plane surfaces that are parallel to each other. The emergent ray is parallel to the incident ray but suffers a lateral displacement d. Assuming that glass plate (refractive index `mu`) is placed in air, find the dependence of d on angle of incidence i. Plot the variation of d with i (changing from `0°` to `90°`)
1 Answers
Talk Doctor Online in Bissoy App
White light is incident normally on a glass plate (in air) of thickness `500 nm` and refractive index of `1.5`. The wavelength (in `nm`) in the visibl
Correct Answer - B For strong reflection. `2mut=(lambda)/(2),(3lambda)/(2),(5lambda)/(2).....rArr lambda=4mut,(4mut)/(3),(4mut)/(5),(4mut)/(7).....` `rArr 3000 nm. 1000 nm, 600 nm, 333 nm.` `rArr` only option is `600 nm`.
2 Answers 1 views
An isosceles glass prism has one of its faces silvered. A light ray is incident normally on the other face which is identical in size to the silvered
Correct Answer - `mu gt (1)/(sin 72^(@))`
2 Answers 1 views
A parallel - plate capacitor of plate area `A` and plate separation d is charged to a potential difference `V` and then the battery is disconnected .
Correct Answer - decrease in energy is `(1)/(2)(epsilon_(0)AV^(2))/(d)((epsilon_(r)-1)/(epsilon_(r)));` energy is transferred to the agent introducing the slab
2 Answers 1 views
A parallel-plate capacitor contains a mica sheet (thickness `10^(-3)`m) and a sheet of fibre (thickness `0.5xx10^(-3)`m). The dielectric constant of m
Correct Answer - `5200 V`
2 Answers 1 views
Between the plates of a parallel-plate capacitor there is a metallic plate whose thickness takes up `eta = 0.60` of the capacitor gap. When that plate
Correct Answer - (a)`-0.15mJ` (b) `0.15mJ`
2 Answers 1 views
The plates of a parallel plate capacitor are separated by a distance `d = 1 cm`. Two parallel sided dielectric slabs of thickness `0. 7cm` and `0.3cm`
Correct Answer - (a) `5xx10^(4)V//m`, `3xx10^(4)V//m`; (b) `35//9`
2 Answers 1 views
A parallel -plate capacitor with the plate area `100cm^2` and the separation between the plate `1.0cm` is connected across a battery of emf 24 volts .
Correct Answer - `2.5xx10^(-7)N`
2 Answers 1 views
White light is incident normally on a plane parallel thin film of µ=1.5. Find the minimum thickness of the film for which light of `lamda`=4000 Å is a
Correct Answer - `1.33xx10^(-7)`m
2 Answers 2 views
A parallel beam of sodium light of wavelength 5896 Å is incident at angle `30^(@)`. Find the minimum thickness of the glass plate for which the transm
Correct Answer - `1.135xx10^(-7)`m
2 Answers 1 views
A ray of light is incident on a glass plate of refractive index 1.54. If the reflected ray is completely plane polarised, find (i) angle of incidence
Correct Answer - (i) `57^(@)` (ii) `33^(@)` (iii) `40.5 ^(@)`
2 Answers 1 views