CXC Physics June 2018 P1

Errors due to parallax can be minimized by:

• taking more than one reading

• placing the eye at right angles to the mark being read

• taking readings from different angles

• taking an average of two readings using two separate scales

Which of the following measuring instruments is MOST suitable for accurately measuring the volume of 40.2 cm³ of a liquid?

• Burette

• Pipette

• Beaker

• Measuring cylinder

Which of the following changes can be caused by a force acting on a body?

• I and II only

• I and III only

• II and III only

• I, II, and III

The mass of an astronaut is 70kg when standing on the moon. When he returns to Earth, his approximate weight will be:

• 70kg

• 70N

• 450kg

• 700N

The moment of a force is defined as the:

• moment in time when a force is first applied to a body

• length of time for which a force is applied to a body

• product of the force and it's perpendicular distance from the turning point to the force

• ratio of the force and it's perpendicular distance from the turning point

The following diagram which shows two forces, X and Y, applied to an object.

What should be the magnitude and direction of a third force which will cause the object to remain stationary?

• X-Y to the left

• X+Y to the left

• X-Y to the right

• X+Y to the right

When a force, F, is applied to a spring of original length L, the new length becomes L+x. What would be the length of the spring if a force of F/2 is applied instead?

• L + 2x

• 2 (L + x)

• L + x

• L + x/2

The following diagram of a vernier caliper.

Which of the following readings is shown on the scale above?

• 12.06 cm

• 12.26 cm

• 12.25 cm

• 12.29 cm

Which of the following measures may be classified as scalar quantities?

• I and II only

• I and III only

• II and III only

• I, II, and III

Pressure in a liquid can be calculated using the formula:

P = ρgh

Which of the following sets of units will result in the SI unit of pressure?

• (A)

• (B)

• (C)

• (D)