Measurement questions | form one Physics

Mention two applications of density in daily life:

The relative density of a body of density 8,000 kg/m3 is _________

Differentiate between mass and weight of an object. Give five differences.

In a laboratory, the diameter of a piece of wire can accurately be measured by
A Vernier Calliper
B Micrometer screw gauge
C Engineer’s Calliper
D Rate meter
E A thread wound round it once.

The aim of the experiment in Figure 1 is to determine the Young`s Modulus, Y of a wooden meter rule.

1. Clamp a meter rule along the top of the bench with its graduated face upwards and with a length L about 85cm projecting beyond the edge of the bench. Record the length L.

2. Attach the pointer to the free end of the meter rule and note its position X₀ on a meter rule clamped vertically in retort stand when unloaded.
3. Suspend a load M of 50g at a distance 1.0cm from the free end. Note the new position of X of the pointer and and then deduce the depression, d of the pointer on the meter rule scale.
4. Repeat procedure (c) above for M equal to 100g, 150g, 200g and 250g.
5. Tabulate your results
6. Plot the graph of d against M.
7. Find the slope, S of the graph.
8. Use the Vernier caliper to measure the breadth, b and the thickness, t of the meter rule.
9. Calculate Young`s Modulus for the wooden meter rule from the expression
10. Mention two sources of errors and two precautions taken in this experiment

When using a measuring cylinder one precaution to be taken is to
A check for zero error
B look at the meniscus from below the level of the water
C obtain more readings by looking from more than one direction
D position the eye in line with the base of the meniscus
E make sure that the measuring cylinder is clean
 

A vernier caliper is used to measure

1. Distance of a car
2. Diameter of a wire
3. Mass of a car
4. Length of a table

Which instrument will you use to measure accurately the inside diameter of abottle neck?
A tape measure. B micrometer screw gauge.
C metre rule. D Vernier calipers.

Which of the following statements is correct about mass?
A It is measured by beam balance
B It is measured by spring balance
C It varies with place
D It can be zero.

A hydrometer is an instrument used to measure
A the volume of liquids. B the density of liquids.
C the density of solids. D the volume of solids.