8th Standard Syllabus & Materials
8th Standard
TN 8th Tamil இயல் 3 - கல்வி கரையில - வினைமுற்று Important Questions And Answers Study Material - QB365 Set A
NEW8th Standard
TN 8th Tamil இயல் 2 - ஈடில்லா இயற்கை - மயங்கொலிகள் Important Questions And Answers Study Material - QB365 Set A
NEW8th Standard
TN 8th Tamil இயல் 2 - ஈடில்லா இயற்கை -பட்டமரம் Important Questions And Answers Study Material - QB365 Set A
NEW8th Standard
TN 8th Tamil இயல் 2 - ஈடில்லா இயற்கை - இயற்கையை போற்றுவோம் Important Questions And Answers Study Material - QB365 Set A
NEW8th Standard
TN 8th Tamil இயல் 1 - தமிழ் இன்பம் - ஆழிக்கு இணை Important Questions And Answers Study Material - QB365 Set A
NEW8th Standard
TN 8th Tamil இயல் 2-ஈடில்லா இயற்கை - திருக்குறள் Important Questions And Answers Study Material - QB365 Set A
Published on: 26/08/2019
Light
Download Tamil Nadu 8th 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.
When the angle of inclination decreases the number of images formed _________
increase
decreases
remain same
none of the above
2.
An imaginary line perpendicular to the reflecting surface is called
imaginary line
curved line
Perpendicular line
normal
3.
In which mirror the following statement is labeled?
Convex mirror
Concave mirror
Plane mirror
Spherical mirror
4.
Mirrors which magnify the object placed close to them.
Convex mirror
Concave mirror
Plane mirror
ellipsoid mirror
5.
__________ form the perfect image of an object
Spherical mirrors
Parabolic mirrors
Plane mirrors
Cylindrical mirrors
6.
The refractive index of water is
1.0
1.33
1.44
1.52
7.
If the focal length of a spherical mirror is 10 cm, what is the value of its radius of curvature?
10 cm
5 cm
20 cm
15 cm
8.
Focal length is equal to half of the
centre of curvature
axis
radius of curvature
None of the above
9.
The distance from the pole to the focus is called
Pole length
focal length
principal axis
None of the above
10.
Which of the following has curved reflecting surface?
plane mirrors
spherical mirrors
simple mirrors
None of the above
11.
__________ is the best reflector of light
12.
_________ is a device which produces numerous pattern of images
13.
Nature of the images formed by a convex mirror is _________.
14.
Geometric centre of the spherical mirror is ________.
15.
The spherical mirror used in a beauty parlour as make-up mirror is ________.
16.
Refraction
17.
Reflection
18.
Regular reflection
19.
Parobolic mirror
20.
Convex mirror
1.
(a)
increase
2.
(d)
normal
3.
(a)
Convex mirror
4.
(b)
Concave mirror
5.
(c)
Plane mirrors
6.
(b)
1.33
7.
(c)
20 cm
8.
(c)
radius of curvature
9.
(b)
focal length
10.
(b)
spherical mirrors
11.
( )
Silver
12.
( )
Kaleidoscope
13.
( )
virtual image
14.
( )
Pole
15.
( )
Concave mirror
16.
Bending of light
17.
Bouncing of light
18.
plane mirror
19.
Radio telescopes
20.
Rear - view mirror
8th Standard Syllabus & Materials
8th Standard
TN 8th Tamil இயல் 3 - கல்வி கரையில - பாடறிந்து ஒழுகுதல் Important Questions And Answers Study Material - QB365 Set A
NEW8th Standard
TN 8th Tamil இயல் 3-கல்வி கரையில - பல்துறைக் கல்வி Important Questions And Answers Study Material - QB365 Set A
NEW8th Standard
TN 8th Tamil இயல் 3-கல்வி கரையில - புத்தியைத் தீட்டு Important Questions And Answers Study Material - QB365 Set A
NEW8th Standard
TN 8th Tamil இயல் 2 - ஈடில்லா இயற்கை - தமிழர் மருத்துவம் ( நேர்காணல்) Important Questions And Answers Study Material - QB365 Set A
Tamilnadu Stateboard 8th Standard Subjects
Tamilnadu Stateboard Standards
