**–(Exercise: Questions Answers)–****[Open]**

**–(Exercise: Numericals/Problems)–****[Open]**

**–(Extra: MCQ’s)–****[Open]**

**–(Extra: Short Questions)–****[Open]**

**–(Extra: Long Questions)–****[Open]**

__Contents__

__Contents__

__Section 1: (Exercise: Questions Answers)__

__Section 2: (Exercise: Numericals)__

__Section 3: (Extra: MCQ’s)__

__Section 4: (Extra: Short Questions)__

- Define heat. (LHR 2014)
- Define thermometry and temperature. (LHR 2014, GRW 2015)
- Define internal energy.
- Define thermal equilibrium.
- Define thermometer. (LHR 2013)
- Write down the conversions of thermometer scales. (LHR 2013, GRW 2014, 2015)
- Define specific heat? (GRW 2013, 2014 , 2016 LHR 2015)
- Define heat capacity. (GRW 2015)
- Define latent heat of fusion. (GRW 2013, 2015)
- Define latent heat of vaporization. (GRW 2014)
- Define evaporation.
- What is linear Expansion?
- What is volume expansion? (GRW 2013)
- Write down some consequences of thermal expansion.
- Write down some applications of thermal expansion.
- What do you know about bimetallic strip (thermostat)?
- Write down some examples of expansions of solids.
- While constructing bridges, one end of the beam is placed on rollers. Explain why?
- What is the difference between specific heat and latent heat of a material?
- Why temperature of a substance does not change while it is changing its state from solid to liquid?

__Section 5: (Extra: Long Questions)__

- What is thermometer? Explain its different types.
- What is specific heat? Explain with examples and derive its mathematical formula.
- Explain the importance of large specific heat capacity of water.
- Define heat capacity. Derive its mathematical formula and write down an activity to
- Explain with an activity the change of state.
- Define latent heat of fusion and write down its mathematical formula.
- Define latent heat of vaporization. Write its mathematical formula.
- Define evaporation. On what factor speed of evaporation depend? Explain.
- What is thermal expansion? Explain on the basis of kinetic molecular theory.
- What is linear Expansion? On what factor it depend? Derive its mathematical formula.
- What is volume expansion? On what factors it depend? Derive its mathematical formula.
- Write down the consequences of thermal expansion.
- Write down the applications of thermal expansion.
- Explain the thermal expansion of liquid.

**9th Class Notes Links:**

**Physics Notes – Full Book PDF****Mathematics Notes – Full Book PDF****Biology Notes – Full Book PDF****Chemistry Notes – Full Book PDF****Computer Science Notes – Full Book PDF****Islamiat Studies Notes – Full Book PDF****Pakistan Studies Notes – Full Book PDF****Urdu Notes – Full Book PDF****Pairing Scheme – All Subjects – (2019 to Onward)**

physics kai notes Gujranwala board kai lye bhi hai kya aur apne long questions kai num dye hai like bhi hue