9th Standard Syllabus & Materials
9th Standard
TN 9роЖроорпН ро╡роХрпБрокрпНрокрпБ роХрогро┐родроорпН роЖропродрпНродрпКро▓рпИ ро╡роЯро┐ро╡ро┐ропро▓рпН,роорпБроХрпНроХрпЛрогро╡ро┐ропро▓рпН роорпБроХрпНроХро┐ропрооро╛рой 2,3,&5 роородро┐рокрпНрокрпЖрогрпН ро╡ро┐ройро╛роХрпНроХро│рпН ро╡ро┐роЯрпИроХро│рпБроЯройрпН TN 9th Maths Coordinate Geometry,Trigonometry Important 1 Mark Questions with Answers 2,3,&5 Marks Questions with Answers
NEW9th Standard
TN 9роЖроорпН ро╡роХрпБрокрпНрокрпБ роХрогро┐родроорпН роЕро│ро╡ро┐ропро▓рпН,рокрпБро│рпНро│ро┐ропро┐ропро▓рпН&роиро┐роХро┤рпНродроХро╡рпБ роорпБроХрпНроХро┐ропрооро╛рой 2,3,&5 роородро┐рокрпНрокрпЖрогрпН ро╡ро┐ройро╛роХрпНроХро│рпН ро╡ро┐роЯрпИроХро│рпБроЯройрпН TN 9th Maths Mensuration,Statistics&Probability Important 1 Mark Questions with Answers 2,3,&5 Marks Questions with Answers.
NEW9th Standard
TN 9роЖроорпН ро╡роХрпБрокрпНрокрпБ роЪроорпВроХ роЕро▒ро┐ро╡ро┐ропро▓рпН ро╡ро░ро▓ро╛ро▒рпБ - роЪрпЖро╡рпНро╡ро┐ропро▓рпН роЙро▓роХроорпН роорпБроХрпНроХро┐ропрооро╛рой 2,3,&5 роородро┐рокрпНрокрпЖрогрпН ро╡ро┐ройро╛роХрпНроХро│рпН ро╡ро┐роЯрпИроХро│рпБроЯройрпН TN 9th Social Science HIS - The Classical World Important 1 Mark Questions with Answers 2,3,&5 Marks Questions with Answers.
NEW9th Standard
TN 9роЖроорпН ро╡роХрпБрокрпНрокрпБ роЪроорпВроХ роЕро▒ро┐ро╡ро┐ропро▓рпН ро╡ро░ро▓ро╛ро▒рпБ - родрпКроЯроХрпНроХроХро╛ро▓родрпН родрооро┐ро┤рпНроЪрпН роЪроорпВроХроорпБроорпН рокрогрпНрокро╛роЯрпБроорпНроорпБроХрпНроХро┐ропрооро╛рой 2,3,&5 роородро┐рокрпНрокрпЖрогрпН ро╡ро┐ройро╛роХрпНроХро│рпН ро╡ро┐роЯрпИроХро│рпБроЯройрпН TN 9th Social Science HIS - Early Tamil Society and Culture Important 1 Mark Questions with Answers 2,3,&5 Marks Questions with Answers.
NEW9th Standard
TN 9роЖроорпН ро╡роХрпБрокрпНрокрпБ роЪроорпВроХ роЕро▒ро┐ро╡ро┐ропро▓рпН ро╡ро░ро▓ро╛ро▒рпБ - родрпКро┤ро┐ро▒рпНрокрпБро░роЯрпНроЪро┐ роорпБроХрпНроХро┐ропрооро╛рой 2,3,&5 роородро┐рокрпНрокрпЖрогрпН ро╡ро┐ройро╛роХрпНроХро│рпН ро╡ро┐роЯрпИроХро│рпБроЯройрпН TN 9th Social Science HIS - Industrial Revolution Important 1 Mark Questions with Answers 2,3,&5 Marks Questions with Answers.
NEW9th Standard
TN 9роЖроорпН ро╡роХрпБрокрпНрокрпБ роЪроорпВроХ роЕро▒ро┐ро╡ро┐ропро▓рпН ро╡ро░ро▓ро╛ро▒рпБ - роиро╡рпАрой ропрпБроХродрпНродро┐ройрпН родрпКроЯроХрпНроХроорпН роорпБроХрпНроХро┐ропрооро╛рой 2,3,&5 роородро┐рокрпНрокрпЖрогрпН ро╡ро┐ройро╛роХрпНроХро│рпН ро╡ро┐роЯрпИроХро│рпБроЯройрпН TN 9th Social Science HIS - The Beginning of the Modern AgeImportant 1 Mark Questions with Answers 2,3,&5 Marks Questions with Answers.
Published on: 04/10/2019
Term 1 Light
Download Tamil Nadu 9th 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.
Name some total internal reflection events taken place in nature.
2.
When does total internal reflection take place?
3.
Which has higher refractive index water or glass?
4.
What is the unit of refractive index?
5.
Write the spherical mirror formula and explain the meaning of each symbol used in it.
6.
What is meant by magnification? Write its expression. What is its sign for the image and virtual image?
7.
State the direction of incident ray which after reflection from a spherical mirror retraces its path. Give reason for your answer.
8.
Pick out the concave and convex mirrors from the following and tabulate them Rear-view mirror, Dentist’s mirror, Torch-light mirror, Mirrors in shopping malls, Make-up mirror.
9.
a) Complete the diagram to show how a concave mirror forms the image of the object.
b) What is the nature of the image?
10.
An object 2 cm high is placed at a distance of 16 cm from a concave mirror which produces a real image 3 cm high. Find the position of the image.
1.
Mirage, sparkling of diamond twinkling of stars are some of the events taken place in nature.
2.
When the angle of incidence exceeds the value of critical angle, the refracted ray is not possible, since r > 90° the ray is totally reflected back to the same medium. This is called as total internal reflection.
3.
Glass has higher refractive index.
4.
No unit for refractive index.
5.
The spherical mirror equation is \(\frac { 1 }{ f } =\frac { 1 }{ { u } } +\frac { 1 }{ v } \)
u = distance of object.
v = distance of image.
f = focal length of spherical mirror.
6.
Magnification is defined as the ratio of the height of the image \(\left( { h }_{ i } \right) \) to the height of object \(\left( { h }_{ 0 } \right) \)
Magnification \(=\frac { { h }_{ i } }{ { h }_{ 0 } }\)
1. Real image is negative sign.
2. Virtual image is positive sign
7.
A ray of light going towards the centre of curvature is reflected back along the same path. It is a rule for construction of image formed by spherical mirrors.
8.
| Concave mirror | Convex mirror |
| 1. Dentist's mirror | Rear view mirror |
| 2. Torch light mirror, Make up mirror | Mirrors in shopping malls |
9.
(a)
b) Nature of the image is Real, inverted, magnified.
10.
Height of object h1 = 2 cm
Height of real image h2 = -3 cm
Magnification m =\(\frac { { h }_{ 2 } }{ { h }_{ 1 } } \)
= \(\frac { -3 }{ 2 } \)
= -1.5
We know that, m = \(\frac { -v }{ u } \)
here, object distance u = - 16 cm
Substituting the value, we get
-1.5 = - \(\frac { v }{ (-16) } \)
-1.5 = \(\frac { v }{ (-16) } \)
v = 16 \(\times\) -1.5
v = -24 cm
The position of image is 24 cm in front of the mirror (negative sign indicates that the image is on the left side of the mirror).
9th Standard Syllabus & Materials
9th Standard
TN 9роЖроорпН ро╡роХрпБрокрпНрокрпБ роЪроорпВроХ роЕро▒ро┐ро╡ро┐ропро▓рпН ро╡ро░ро▓ро╛ро▒рпБ - рокрогрпНроЯрпИроп роиро╛роХро░ро┐роХроЩрпНроХро│рпН роорпБроХрпНроХро┐ропрооро╛рой 2,3,&5 роородро┐рокрпНрокрпЖрогрпН ро╡ро┐ройро╛роХрпНроХро│рпН ро╡ро┐роЯрпИроХро│рпБроЯройрпН TN 9th Social Science HIS - Ancient . Civilisations Important 1 Mark Questions with Answers 2,3,&5 Marks Questions with Answers.
NEW9th Standard
TN 9роЖроорпН ро╡роХрпБрокрпНрокрпБ роЪроорпВроХ роЕро▒ро┐ро╡ро┐ропро▓рпН ро╡ро░ро▓ро╛ро▒рпБ - рокрпБро░роЯрпНроЪро┐роХро│ро┐ройрпН роХро╛ро▓роорпН роорпБроХрпНроХро┐ропрооро╛рой 2,3,&5 роородро┐рокрпНрокрпЖрогрпН ро╡ро┐ройро╛роХрпНроХро│рпН ро╡ро┐роЯрпИроХро│рпБроЯройрпН TN 9th Social Science HIS - The Age of Revolutions Important 1 Mark Questions with Answers 2,3,&5 Marks Questions with Answers.
NEW9th Standard
TN 9роЖроорпН ро╡роХрпБрокрпНрокрпБ роЪроорпВроХ роЕро▒ро┐ро╡ро┐ропро▓рпН ро╡ро░ро▓ро╛ро▒рпБ - роЗроЯрпИроХрпНроХро╛ро▓ роЗроирпНродро┐ропро╛ро╡ро┐ро▓рпН роЕро░роЪрпБроорпН роЪроорпВроХроорпБроорпН роорпБроХрпНроХро┐ропрооро╛рой 2,3,&5 роородро┐рокрпНрокрпЖрогрпН ро╡ро┐ройро╛роХрпНроХро│рпН ро╡ро┐роЯрпИроХро│рпБроЯройрпН TN 9th Social Science HIS - State and Society in Medieval India Important 1 Mark Questions with Answers 2,3,&5 Marks Questions with Answers.
NEW9th Standard
TN 9роЖроорпН ро╡роХрпБрокрпНрокрпБ роЪроорпВроХ роЕро▒ро┐ро╡ро┐ропро▓рпН ро╡ро░ро▓ро╛ро▒рпБ - роЖроЪро┐роп роЖрокрпНрокро┐ро░ро┐роХрпНроХ роиро╛роЯрпБроХро│ро┐ро▓рпН роХро╛ро▓ройро┐ропро╛родро┐роХрпНроХроорпН роорпБроХрпНроХро┐ропрооро╛рой 2,3,&5 роородро┐рокрпНрокрпЖрогрпН ро╡ро┐ройро╛роХрпНроХро│рпН ро╡ро┐роЯрпИроХро│рпБроЯройрпН TN 9th Social Science HIS - Colonialism in Asia and Africa Important 1 Mark Questions with Answers 2,3,&5 Marks Questions with Answers.
Tamilnadu Stateboard 9th Standard Subjects
Tamilnadu Stateboard Standards
