9th Class Physics Guess

 

Important Guess Physics 9th

Short Question

Chapter 1

Define Physics and its branches, least count & its formula, plum line, physical balance, 

electronic balance, base & derive quantities. / Scientific notation/ Significant Figure/ Define SI 

unit / Estimate your age in second Exercise: N# 1.2, 1.3, 1.5, 1.9 

Chapter 2

Define rest, motion with example, rotatory, vibratory, translator, motion, difference between 

distance and displacement, speed and velocity, scalar &vector quantities, velocity, uniform, , 

uniform speed, acceleration, uniform acceleration, retardation, gravitational acceleration 

(Including units and formulas) / Tables: useful information of Acceleration, converting ms 

into kmh / Exercise: 2.5, 2.8, 2.10 / Conceptual: 1.what is relation of speed time graph? 2.

Value of g increases when we throw something downward or upward? 3. Will a stone and a 

feather reach same time when we throw them form same distance?

Chapter 3

Define inertia, force, momentum, friction, 1N force, limiting friction, coefficient of friction, 

skidding, methods to reduce friction, Advantages of friction. cold weds, centripetal force, 

centrifugal force. Newtons laws of motion & law of conservation of momentum/ working of 

washing machine and cream separator / Read all side Tables of chapter. (important MCQs) , 

when gun is fired, it recoils. why? Conceptual: 1.. What happens if there is no force of

friction? 3. Is friction desirable? 5. Why bus turns outward when moved from curved road?

CH 4 

Define parallel, un parallel force, head to tail rule, rigid body, torque, moment arm, principal 

of moment, center of gravity couple. / All states of equilibrium. / Exercise: 4.13, 4.11 / 

Conceptual: 1. What is relation in height and center of gravity?

2. During sky driving is the person is in equilibrium?

CH 

5

Define Law of gravitation, gravitational field strength, field force, GPS / Exercise: 5.3, 5.5, 

5.12, 5.15, 5.16

CH 

6

Define Work, energy, kinetic & potential energy, mechanical heat sound & light energy, 

efficiency, power , watt (including unit and formula) / Exercise: 6.8, 6.9, 6,10, 6.11, 6.12 

CH 

7

Define density, pressure, atmosphere, barometer, principal of flotation, elasticity. / Exercise:

7.3, 7.5, 7.7, 7.10, 7.11, 7.12, 7.13, 7.20, 7.21 / Read Side All tables (Do you know) 

important for MCQs and short answers

CH 

8

Define heat, internal energy, thermometer, specific heat, heat capacity, latent heat of fusion & 

vaporization, evaporation & linear thermal expansion. / Exercise: 8.2, 8.5, 8.6, 8.7, 8.8

CH 

9

Define conduction, thermal conductivity, rate of flow of heat, convection, radiation, global 

warming & greenhouse effect. / Exercise: 9.4, 9.6, 9.7, 9.9, 9.10 / Table: surfaces 

Emitter, Absorber & Reflector ( relationship) 

LONG QUESTIONS

CH 

2

Type of motion, All equations of motion

CH 

3

1, 2 & 3 law of newton, tension in string, law of conservation of mass, friction& advantages

Ch 

4

Resolution of forces, center of mass, effects of torque, 1 & 2 condition of equilibrium.

CH 

6

Kinetic energy, potential energy

CH 

7

Pascal law, Archimedes principal, Hooke’s law, young’s modulus.

CH 

8

Thermometer, specific heat, heat capacity, latent heat of fusion, thermal expansion.

NUMERICAL QUESTIONS

CH 2 Numerical no: 2.1, 2.2, 2.3, 2.6, 2.8 Example: 2.3, 2.11, 2.13, 2.14

CH 3 Numerical no: 3.3, 3.4, 3.6, 3.7, 3.9, 3.10 / Example: 3.7 

CH 4 Numerical no: 4.2, 4.3, 4.5, 4.6, 4.7, 4.8, 4.9 Example: 4.4, 4.6

CH 6 Numerical no: 6.2, 6.3, 6.4, 6.5, 6.7, 6.9, 6.10

CH 7 Numerical no:7.2, 7.3, 7.7, 7.8, 7.9, 7.10, 7.11, 7.12 Example: 7.3, 7.4, 7.5,7.7

CH 8 Numerical no: 8.2, 8.4,8.5, 8.7, 8.10

CH 9 Numerical no: 9.1, 9.2