Gas Pressure Quiz Questions and Answers PDF - 25

MCQ 121: If the density of water is 1000 kg m^-3, atmospheric pressure is 1.01 × 10⁵ and gravitational field strength is 10 N kg^-1.What is the pressure acting on a scuba diver when he is at the surface?

1. 3.01 × 10⁵
2. 2.01 × 10⁵
3. 1.01 × 10⁵
4. 10.01 × 10⁵

MCQ 122: The gravity is denoted by

1. G
2. g
3. A
4. a

MCQ 123: When a resultant force acts on a object of constant mass, the object will accelerate and move in the direction of the resultant force. This statement refers to

1. Newton's second law of motion
2. Newton's third law of motion
3. Newton's first law of motion
4. Hooke's law

MCQ 124: The mass per unit volume is called the substance's

1. weight
2. inertia
3. density
4. force

MCQ 125: If the refractive index of water is 1.33 and of air is 1, the value of critical angle for water at 90° refracted angle should be

1. 45°
2. 48.8°
3. 51.6°
4. 59.8°