Physics CSEC 2018 June 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. Shape

II. Motion

III.Density

• I and II only

• I and III only

• II and III only

• I, II and III

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

• 70 kg

• 70 N

• 420 kg

• 700 N

The moment of a torque 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 its perpendicular distance from the turning point to the force

• ratio of the force and its perpendicular distance from the turning point

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

• X-P to the left

• X+F to the left

• X-F to the right

• X + F 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

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. Time

II. Speed

III. Displacement

• 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 = pgh. Which of the following sets of units will result in the SI unit of pressure?

• A

• B

• C

• D