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Published on: 24/08/2019
Optics
Download Tamil Nadu 10th Standard Science question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.
Questions + Answers key
Take MCQ Science Test1.
The scattering of light by colloidal particles is _____ scattering.
Ray light
Mie
Raman
Tyndall
2.
If the energy of the incident and scattered beam of light are same, then it is called ______ scattering
Ray light
Inelastic
Mie
Elastic
3.
Velocity and wavelength of light are related by a relation
g-c⋋
\(\gamma =\frac { c }{ \lambda } \)
c=\(\gamma \)⋋
both b & c
4.
The velocity of light is _______
3 x 10-8 ms-1
3 x 108 ms-1
3 x 108 km s-1
3 x 10-8 km s-1
5.
The group of rays is ______
lines
dots
beam
none of these
6.
The path of light is ______
rays
point
lines
beam
7.
If VB, VG, VR be the velocity of blue, green and red light respectively in a glass prism, then which of the following statement gives the correct relation?
VB = VG = VR
VB > VG >VR
VB < VG < VR
VB < VG > VR
8.
9.
In a myopic eye, the image of the object is formed
behind the retina
on the retina
in front of the retina
on the blind spot
10.
The refractive index of four substances A, B, C and D are 1.31, 1.43, 1.33, 2.4 respectively. The speed of light is maximum in
A
B
C
D
11.
The focal length of the eye lens is adjusted by ______
12.
Ciliary muscles help to change _____ of the eye lens according to the position of the object.
13.
______ tough membrane protects the internal parts of the eye.
14.
1D is equal to _______
15.
Angle of refraction is _____ for red and _____ for violet.
16.
Refraction is due to difference in _____ of light in different media.
17.
Blue and green light has different _____ and ______
18.
Amount of light entering into the eye is controlled by________
19.
If the energy of incident beam and the scattered beam are same, then the scattering of light is called as ________ scattering.
20.
The refractive index of a transparent medium is always greater than__________
21.
Blue colour of the sea
22.
Splitting up of colours
23.
Objects can be seen
24.
Deviation of ray
25.
red light
26.
violet light
27.
Object which emit their own light
28.
Object which give out light
29.
Hypermetropia
30.
Ciliary muscles
1.
(d)
Tyndall
2.
(d)
Elastic
3.
(d)
both b & c
4.
(b)
3 x 108 ms-1
5.
(c)
beam
6.
(a)
rays
7.
(c)
VB < VG < VR
8.
(d)
9.
(c)
in front of the retina
10.
(a)
A
11.
( )
ciliary muscles
12.
( )
focal length
13.
( )
sclera
14.
( )
1 m-1
15.
( )
smallest, highest
16.
( )
velocity
17.
( )
wavelength, frequency
18.
( )
Iris
19.
( )
elastic
20.
( )
one
21.
Scattering of light
22.
Dispersion
23.
Reflection
24.
Refraction
25.
highest wavelength
26.
highest frequency
27.
Luminous
28.
source
29.
near point moves away
30.
Power of accommodation
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Tamilnadu Stateboard 10th Standard Subjects
Tamilnadu Stateboard Standards
