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9th class physics chap 1 test 2 topics.pptx
- 1. Questions with marks 3 each 1. Give 3 examples depicting importance of Physics in our life. 2. Name 6 branches of Physics. 3. Define the branch of Physics named as Mechanics. 4. Define the branch of Physics named as Nuclear Physics. 5. Differentiate the Base and Derived Units. 1. Speed 2. Density 3. Electric current 4. Charge 5. Intensity of light 6. pressure
- 2. Questions with marks 1 each 1. The Number of Base Units in SI Units are:- a. 3 c. 9 b. 6 d. 7 2. The unit of Electric Current is:- a. Candela c. second b. Ampere d. meter 3. Andromeda is one of the billions of galaxies of known________. a. Stars c. asteroids b. Pole d. universe 4. The study of the structure and properties of atom is called: a. Electricity c. Nuclear Physics b. Geo Physics d. Atomic Physics 5. The eleventh general conference was held in Paris in ____________. a. 1959 c. 1961 b. 1660 d. 1960
- 3. In our daily life, Physics is everywhere. Pulleys that make it easy to lift heavy loads. Electricity is used not only to get light and heat but also mechanical energy that drives fans and electric motors etc. Means of transportation such as car and aero planes Domestic appliances such as air conditioners, refrigerators, vacuum-cleaners, washing machines, and microwave ovens etc. Similarly the means of communication such as radio, TV, telephone and computer are the result of applications of physics. INSIGHTS OF PHYSICS Answer to Q.1 Physical Quantities and Measurement UNIT 1
- 4. For example, Think of what a mobile phone smaller than our palm? It allows us to contact people anywhere in the world and to get latest worldwide information. We can take and save pictures, send and receive messages of our friends. We can also receive radio transmission and can use it as a calculator as well. However, the scientific inventions have also caused harms and destruction of serious nature. One of which is the environmental pollution and the other is the deadly weapons. INSIGHTS OF PHYSICS Answer to Q.1 Physical Quantities and Measurement UNIT 1
- 5. Q.2: BRANCHES OF PHYSICS Mechanics Heat Sound Light (Optics) Electricity and Magnetism Atomic Physics Nuclear Physics Plasma Physics Geophysics INSIGHTS OF PHYSICS Physical Quantities and Measurement UNIT 1
- 6. Q.3/4: BRANCHES OF PHYSICS 1. Mechanics: It is the study of motion of objects, its causes and effects. 2. Nuclear Physics: It deals with the properties and behavior of nuclei and the particles within the nuclei. INSIGHTS OF PHYSICS Physical Quantities and Measurement UNIT 1
- 7. Q.5: Base & Derived Quantities Base Units Derived units Electric current Speed Intensity of light Pressure Density Charge INSIGHTS OF PHYSICS Physical Quantities and Measurement UNIT 1
- 8. Questions with marks 1 each 1. The Number of Base Units in SI Units are:- a. 3 c. 9 b. 6 d. 7 2. The unit of Electric Current is:- a. Candela c. second b. Ampere d. meter 3. Andromeda is one of the billions of galaxies of known________. a. Stars c. asteroids b. Pole d. universe 4. The study of the structure and properties of atom is called: a. Electricity c. Nuclear Physics b. Geo Physics d. Atomic Physics 5. The eleventh general conference was held in Paris in ____________. a. 1959 c. 1961 b. 1660 d. 1960