OCR A-Level Physics A Foundations of physics overview quiz quiz

The newton

The kelvin

The joule

The volt

$\text{kg m s}^{-2}$

$\text{kg m}^2\text{s}^{-3}$

$\text{kg m}^2\text{s}^{-2}$

$\text{kg m}^{-1}\text{s}^{-2}$

Electric charge

Kinetic energy

Temperature

Displacement

$5.0\ \text{N}$

$1.0\ \text{N}$

$7.0\ \text{N}$

$12\ \text{N}$

$F\sin\theta$

$F\cos\theta$

$F\tan\theta$

$\frac{F}{\cos\theta}$

Accurate but not precise

Both accurate and precise

Precise but not accurate

Neither accurate nor precise

It scatters readings randomly above and below the true value

It is reduced by taking the mean of many repeats

It is caused only by the experimenter's reaction time

It shifts every reading by the same amount or proportion

$7\%$

$3\%$

$5\%$

$9\%$

Add the percentage uncertainties

Add the absolute uncertainties

Multiply the absolute uncertainties

Take the larger of the two percentage uncertainties

$10^{-6}$

$10^{-12}$

$10^{-9}$

$10^{9}$

The equation is definitely correct and has been fully proven valid in every respect

The equation must therefore contain a hidden factor of exactly $\frac{1}{2}$

The equation is definitely wrong and should be rejected immediately

The equation is dimensionally consistent but may have a wrong numerical constant