1 Pressure is defined as: A Force multiplied by area B Force divided by area C Area divided by force D Force divided by volume
2 Which of the following is a disadvantage of fossil fuels? A They are renewable B They cause air pollution C They are cheap to extract D They produce no waste
4 The pressure exerted by a liquid at a given depth depends on: A The shape of the container B The density of the liquid C The volume of the liquid D The color of the liquid
5 The density of a material is defined as: A mass per unit volume B force per unit area C weight per unit volume D volume per unit mass
6 In a hydraulic press, a small force applied to a small piston produces a large force on a large piston because: A Pressure is greater in the larger piston B Pressure is transmitted equally to both pistons C The larger piston has less area D The liquid is compressible
7 Strain is defined as: A Change in length per unit original length B Force per unit area C Change in area per unit force D Force per unit length
10 A U-tube manometer is used to measure: A atmospheric pressure only B gauge pressure of a gas C temperature of a gas D density of a liquid
11 Which of the following is the correct formula for density? A Density = Volume / Mass B Density = Mass × Volume C Density = Mass / Volume D Density = Force / Area
12 In a simple pendulum, the energy transformation at the mean position is: A Potential to kinetic B Kinetic to potential C Kinetic to heat D Potential to heat
13 The pressure at a point inside a liquid at rest acts: A Only downward B Only upward C Equally in all directions D Only horizontally
14 The efficiency of a machine is 80%. If the input energy is 500 J, the useful output energy is: A 100 J B 400 J C 500 J D 625 J
16 ہائیڈرولک پریس کس اصول پر کام کرتا ہے؟ A ہُک کا قانون B پاسکل کا قانون C ارشمیدس کا اصول D نیوٹن کا قانون
17 A force of 10 N is applied to a box, and the box moves 3 m in the direction of the force. What is the work done by the force? A 30 J B 13 J C 3.33 J D 0 J
18 The energy stored in the nucleus of an atom is called: A Nuclear energy B Chemical energy C Geothermal energy D Tidal energy
19 According to Pascal's law, when pressure is applied to a liquid enclosed in a container, the pressure is transmitted: A Only in the direction of the applied force B Equally in all directions C Only upward D Only downward
20 A diver experiences more pressure at greater depths because: A Water is denser at depth B Pressure increases with depth C Temperature decreases D Gravity increases
21 A mercury barometer is used to measure: A Liquid pressure in a container B Atmospheric pressure C Gauge pressure in a pipe D Density of a liquid
22 A hydraulic press is used to lift a heavy load. If the area of the small piston is 0.01 m² and the force applied is 100 N, what is the pressure transmitted through the liquid? A 1 Pa B 100 Pa C 10,000 Pa D 0.0001 Pa
23 The energy from the Sun is called: A Geothermal energy B Solar energy C Tidal energy D Nuclear energy
24 According to Hooke's law, the extension of a spring is directly proportional to the applied force as long as the elastic limit is not exceeded. A The extension is directly proportional to the applied force B The extension is inversely proportional to the applied force C The extension is directly proportional to the square of the applied force D The extension is independent of the applied force