161.
If the angle between the axis of Polarizer and analyser is 90 degree, the intensity of light transmitted by analyser is.............times the intensity transmitted by the polarizer
A
2-Jan
B
4-Mar
C
4-Jan
D
Zero
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If the angle between the axis of Polarizer and analyser is 90 degree, the intensity of light transmitted by analyser is.............times the intensity transmitted by the polarizer
2-Jan
4-Mar
4-Jan
Zero
If the angle between the axis of Polarizer and analyser is 45 degree , the intensity of light transmitted by analyser is...................times the intensity transmitted by the polarizer
2-Jan
4-Mar
4-Jan
Zero
If the angle between the axis of Polarizer and analyser is 300, the intensity of light transmitted by analyser is........times the intensity transmitted by the polarizer
2-Jan
4-Mar
4-Jan
Zero
If a hologram is illuminated by white light it will form
Single color image
Colorful image
will not form image
red image in black and white
How much phase change is introduced by a quarter wave plate between ordinary and extra ordinary ray.
pi
2 pi
pi/2
pi/4
How many principle sections of uniaxial crystal have?
6
3
5
2
Electric field vector vibrates in only one plane and perpendicular to the direction of propagation in.............light
plane polarised
unpolarised
both plane polarised & unpolarised
neither plane polarised & nor unpolarised
Dextrorotatory optically active substance rotates the plane of vibration?
In clockwise direction
In anticlockwise direction
By 180 degree
none of these
An optical fiber cable acts as the principle of
Double refraction
Total external refraction
reflection
total internal reflection
A semiconductor diode Laser is
Four level
Three level
Two level
one level
A quarter of a wavelength is equal to how many degrees of phase?
90
45
60
180
A polarizer and analyzer are oriented so that he amount of transmitted light is maximum .through what angle should either be the turned so that the intensity transmitted light is reduced to 0.25 time maximum intensity.
90 degree
60 degree
150 degree
160 degree
A LCD is a device which is uses the phenomenon of
optical activity
refraction
scattering
dispersion
A hologram records.............of light
Intensity
Intensity and phase
frequency
frequency and Phase
A He - Ne laser is a
Two level
Four level
Three level
One level
A half wave plate is used to add a phase difference of......................O ray and E ray
pi/2
pi
2 pi
A dichroic crystal converts UPL to PPL
reflection
Double refraction
refraction
selective absorption
A 20 cm long tube containing 48 c.c. of sugar rotes the plane of polarization by 11 degree. If the specific rotation of sugar is 66 degree, calculate the mass of sugar solution.
8 gm
4 gm
16 gm
10 gm
Three factories A, B, C have 100, 200 and 300 workers respectively. The mean of the wages is the same in the three factories. Which of the following statements is true?
There is greater variation in factory C.
Standard deviation in. factory A is the smallest.
Standard deviation in all the three factories are equal
None of the above
In a set of observations the variance is 50. All the observations are increased by 100 %. The variance of the increased observations will become:
50
200
100
No change