2022 EOY 3EX Cheatsheet Revision

Physical Quantities consist

• a magnitude only
• a unit only
• a magnitude or unit
• a magnitude and unit

Scalar Quantities are physical quantities that have

• a magnitude only
• a direction only
• a magnitude or direction
• a magnitude and direction

Vector Quantities are physical quantities that have

• a magnitude only
• a direction only
• a magnitude or direction
• a magnitude and direction

Which of the following shows the correct values for the correct prefix? (more than 1 ans)

• M: 106
• G: 106
• m: 10-3
• n: 10-9

What are the correct typical diameters of the following objects?

• atom: 0.1 μm, Earth: 12 Mm
• atom: 0.1 nm, Earth: 12 Mm
• atom: 0.1 μm, Earth: 12 Gm
• atom: 0.1 nm, Earth: 12 Gm

____ is a complete to-and-fro motion and ____ is the time taken for 1 ____.

• period, oscillation, period
• oscillation, period, oscillation
• period, oscillation, oscillation
• oscillation, period, period

What is the correct reading for the vernier calliper?

• (3.1 + 0.04) cm
• (3.1 + 0.05) cm
• (3.1 + 0.4) cm
• (3.1 + 0.5) cm

What is the correct reading for the micrometer?

• (8 + 0.40) mm
• (8.5 + 0.40) mm
• (8 + 0.04) mm
• (8.5 + 0.04) mm

Acceleration of free fall near Earth is approximately ____

• 1 m/s
• 1 m/s²

• 10 m/s
• 10 m/s²

In a distance-time graph, the gradient gives the ____. In a speed-time graph, the gradient gives the ____ and the area under graph gives the _____.

• acceleration, distance, speed
• acceleration, speed, distance
• distance, speed, acceleration
• speed, acceleration, distance