MCQGeeks
0 : 0 : 1
CBSE
JEE
NTSE
NEET
English
UK Quiz
Quiz
Driving Test
Practice
Games
Quiz
Science
Wave Optics
Quiz 2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Q.1
The angle of incidence at which reflected light is totally polarised for reflection from air to glass ( refractive index n)
sin-1 (n)
sin-1 (1 / n)
tan-1 (1 / n)
tan-1 (n)
Q.2
An unpolarised beam of intensity I0 is incident on a pair of nicols making anglewith each other. The intensity of light emerging from the pair is :
I0
I0 / 2
I0 / 4
I0 / 8
Q.3
What does not change on polarisation of light ?
Intensity
Phase
Frequency
Wavelength
Q.4
On passing a plane wavefront through a concave lens, we get a
plane wavefront
spherical wavefront
cylindrical wavefront
parabolic wavefront
Q.5
A point source of light creates..... ........... wavefront
cylindrical
plane
spherical
parabolic
Q.6
Tan(p) = n is known as
malus law
Rayleigh law
huygens law
brewesters law
Q.7
Coherent sources have same
frequency
wavelength
phase
all the above
Q.8
In single slit diffraction experiment, on moving sreen away from the slit angular width of fringes would
decrease
increase
no change
none of these
Q.9
In youngs double slit experiment a path difference ofwavelength at a point would give ........... fringe
dark
bright 🔆
more wide
none of these
Q.10
As per Huygens principle, wavelets originating on a wavefront grow with
slow speed
same speed
more speed
none of these
Q.11
Superposition of family of waves originating from a slit forms......... pattern
interference
diffraction
polarization
dispersion
Q.12
Concave lenses or diverging lenses, always produce images that are .....
Virtual, upright, smaller
Real, inverted, larger
Real, inverted, smaller
Virtual, upright, larger
Q.13
Using the fact that light travels at 3.0xm/s find the frequency of yellow light. (wavelength of yellow light is 5.x 10-7 m)
5.12 x 1014 Hz
176 Hz
0.14 Hz
3 x 108 Hz
Q.14
Calculate the frequency of green light in a vacuum with a wavelength of 5.x-m and a speed (c) of 3.x 108?
5.66 × 1014 Hz
5.17 × 1014 Hz
6 × 1016 Hz
a lot?
Q.15
Solve this problems using the equation: c = λν Calculate the wavelength of light that has a frequency of 5.2 x 1012/s. The speed of of light is 3.xm/s.
5.8 x 10Â -5 m
5.8 x 10Â -7 m
5.19 x 10Â 14 m
1.56 x 10Â 23 m
Q.16
A microwave oven emits a light wave at a wavelength of 0.m. What is the frequency of this radiation?
6.67 x 10-7 Hz
2.00 Hz
1.50 x 106 Hz
6.00 x 1010 Hz
Q.17
If the velocity of light in a medium depends on its frequency, the medium is said to be
refractive
resonant
diffractive
dispersive
Q.18
Calculate the wavelength of light that has a frequency of 5.2 xHz.
5.8 x 10 -5 m
5.8 x 10 -7 m
5.19 x 10 14 m
1.56 x 10 23 m
Q.19
The ratio of intensity of Maxima and Minima for the in the interference of two waves with amplitude a_1a and a2 a_{}a2 ​ is
(a1+a2)(a1−a2)\frac{\left(a_1+a_2\right)}{\left(a_1-a_2\right)}(a1​−a2​)(a1​+a2​)​
(a1−a2)(a1+a2)\frac{\left(a_1-a_2\right)}{\left(a_1+a_2\right)}(a1​+a2​)(a1​−a2​)​
(a1+a2)2(a1−a2)2\frac{\left(a_1+a_2\right)^2}{\left(a_1-a_2\right)^2}(a1​−a2​)2(a1​+a2​)2​
(a1−a2)2(a1+a2)2\frac{\left(a_1-a_2\right)^2}{\left(a_1+a_2\right)^2}(a1​+a2​)2(a1​−a2​)2​
Q.20
When you go out to sun, ultraviolet light rays give you your tan. What is the wavelength of this light if it has a frequency of7.XHz?
3.88 x 10-7 m
3.26 x 10-2 m
2.58 x 106 m
2.32 x 1023 m
0 h : 0 m : 1 s
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Report Question
×
What's an issue?
Question is wrong
Answer is wrong
Other Reason
Want to elaborate a bit more? (optional)
Support mcqgeeks.com by disabling your adblocker.
×
Please disable the adBlock and continue.
Thank you.
Reload page