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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

Vernier calipers, reading to 0.1 mm, are used to find the internal diameter (10.0 ± 0.1 mm) and the external diameter (12.0 ± 0.1 mm) of a length of glass tubing. The mean wall thickness would be quoted, therefore, as

1.0 ± 0.2 mm.

1.0 ± 0.1 mm.

2.0 ± 0.1 mm.

2.0 ± 0.0 mm.

Four students measure the mass of an object, each using a different scale. They record their results as follows: Which student used the most precise scale?

What is the reading shown on this milliammeter?

3.4 mA.

2.7 mA.

3.7 Ma.

2.35 mA.

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

Timing a large number of oscillations to find a period.

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

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.

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

Warm.

Cold.