1 What happens to the shape of a body when a force is applied? A It always breaks B It may change C It becomes heavier D It stops moving
2 What is deformation? A Change in mass B Change in volume only C Change in shape or size D Change in temperature
3 Which force can change the size of a body? A Balanced force B Applied force C Gravitational force only D Magnetic force only
4 Elasticity is the property of a material to: A Break easily B Change color C Regain original shape D Increase mass
8 What is the spring constant? A Force per unit mass B Extension per unit force C Force per unit extension D Area per unit force
10 A stiffer spring has: A Smaller spring constant B Zero spring constant C Larger spring constant D Negative spring constant
11 In a load-extension graph, the straight line shows: A Breaking point B Elastic behavior C Plastic behavior D Failure point
12 The limit of proportionality is the point where: A Graph becomes horizontal B Extension stops C Force is zero D Graph stops being straight
13 Beyond elastic limit, a material: A Returns to original shape B Shows permanent deformation C Becomes rigid D Stops stretching
17 Why do sharp knives cut better? A They have more mass B They reduce force C They increase pressure D They reduce friction
20 Why is atmospheric pressure lower on mountains? A More air B Less air above C More gravity D Higher temperature
21 Which instrument measures atmospheric pressure? A Manometer B Thermometer C Barometer D Hygrometer
23 Standard atmospheric pressure is equal to: A 76 cm of mercury B 10 cm of mercury C 1 cm of mercury D 760 cm of mercury
24 A manometer is used to measure: A Atmospheric pressure only B Liquid pressure only C Gas pressure D Temperature
25 Liquid pressure depends on: A Shape of container B Depth of liquid C Color of liquid D Area of container
28 Pascal’s Law states that pressure applied to a confined liquid: A Acts upward only B Acts downward only C Is transmitted equally D Is reduced
31 Why do camels have wide feet? A To run fast B To increase pressure C To decrease pressure D To reduce weight
32 Pressure at the bottom of a lake is: A Zero B Less than surface C More than surface D Equal to surface
34 What happens to pressure if force doubles and area halves? A No change B Doubles C Triples D Becomes four times