[5 Mark Question Answer]

Questions

Question 15 Marks

Find the area of these leaves, if $1$ square on the graph paper represents $1 \ cm^2$

$1.$ The area of leaf $1$
$2.$ The area of leaf $2$
$3.$ The area of leaf $3$
$4.$ The area of leaf $4$
$5.$ The area of leaf $5$

Answer

$1.$ The area of leaf $1$
$= \ ($Number of complete squares$) \ cm ^2+ \ ($Number of half or more than half squares$) \ cm ^2$
$=\ 3 \ cm ^2+5 \ cm ^2$
$=\ 3 \ cm ^2+5 \ cm ^2=8 \ cm ^2$
$2.$ The area of leaf $2$
$= \ ($Number of complete squares$) \ cm ^2+ \ ($Number of half or more than half squares$) \ cm ^2$
$=\ 3 \ cm ^2+6 \ cm ^2$
$=\ 3 \ cm ^2+6 \ cm ^2=9 \ cm ^2$
$3.$ The area of leaf $3$
$= \ ($Number of complete squares$) \ cm ^2+ \ ($Number of half or more than half squares$) \ cm ^2$
$=\ 8 \ cm ^2+8 \ cm ^2$
$=\ 8 \ cm ^2+8 \ cm ^2=16 \ cm ^2$
$4.$ The area of leaf $4$
$= \ ($Number of complete squares$) \ cm ^2+ \ ($Number of half or more than half squares$) \ cm ^2$
$=\ 6 \ cm ^2+8 \ cm ^2$
$=\ 6 \ cm ^2+8 \ cm ^2=14 \ cm ^2$
$5.$ The area of leaf $5$
$= \ ($Number of complete squares$) \ cm ^2+ \ ($Number of half or more than half squares$) \ cm ^2$
$=\ 6 \ cm ^2+9 \ cm ^2$
$=\ 6 \ cm ^2+9 \ cm ^2=15 \ cm ^2$

View full question & answer→

Question 25 Marks

Describe a method by which you can measure the volume of an irregular solid.

Answer

Aim : To measure the volume of an irregular shaped stone. Materials Required : Some water, a measuring cylinder, a string and a small stone.
Procedure : Pour some water in the measuring cylinder and read its level from the scale marked on the wall of the cylinder. Now tie the string around a stone and lower it into the cylinder without touching its walls until it is completely immersed in water. The level of water in the cylinder rises as the stone is immersed in it. Read the level of water again.
Observation and conclusion : Initial reading of the water level = 80 mL (say) Final reading of the water level = 130 mL.
Hence, the volume of the stone = 130 mL – 80 mL = 50 mL.

View full question & answer→

Generate Paper Free All Physical Quantities and Measurement topics

PHYSICS [5 Mark Question Answer]

[5 Mark Question Answer]

Test yourself on this topic