Revise smart, understand Better

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Revise smart, understand Better

Dynamics: Newton’s Laws of Motion
ELECTRICITY: Current
ELECTRICITY: Current
ELECTRICITY: Resistance
Elasticity
Electric fields
Electromagnetism
Electromagnetism
Energy: Application And Uses
Experimental physics
Forces
Gravitational fields
Heat
Kinematics in Two Dimensions: Vectors, projectiles
Kinematics in one dimension
Linear Momentum
MOTION
MOTION
MOTION
MOTION
MOTION
MOTION: Circular
MOTION: Collision
MOTION: Inclined plane
MOTION: Simple harmonic motion (SHM)
Magnetism
Optics
PLASTICS
PRESSURE
Radioactivity
TEMPERATURE
The Laws of Thermodynamics
Units System
Units System
Units, dimensions and homogeneity
WAVES: Electromagnetic
WAVES: Electromagnetic
WAVES: Sound

5/12 MCQs for:

Experimental physics

A useful method of expressing very small or very large numbers is:

The metric system.

Arabic numerals.

Scientific notation.

Roman numerals.

Which of the following experimental techniques reduces the systematic error of the quantity being investigated?

Plotting a series of voltages and current readings for an ohmic device on a graph and using its gradient to find resistance.

Adjusting an ammeter to remove its zero error before measuring a current.

Measuring the diameter of a wire repeatedly and calculating the average.

Timing a large number of oscillations to find a period.

Four students each made a series of measurements of the acceleration of free fall g (in ms-2). The table shows the results obtained. Which student obtained a set of results that could be described as accurate but not precise?

What is the percent uncertainty in the measurement 2.58 ± 0.15 cm?

8.7%.

5.8%.

12%.

2.9%.

Is a temperature of 30o C warm or cold to man?

Warm.

Cold.