Activity 10.10
as ABCD
d
Take four identical pins.
Fix two pins, say E and F. vertically such that the line joining the
pins is inclined to the edge AB,
Look for the images of the pins E and F through the opposite edge
Fix two other pins, say G and H, such that these pins and the
images of E and F lle on a straight line.
Remove the pins and the slab.
Join the positions of tip of the pins E and F and produce the line
up to AB. Let EF meet AB at o. Similarly, Join the positions of tip
of the pins G and H and produce it up to the edge CD. LA HG
meet CD at O'.
Join O and O'. Also produce EF up to P, as shown by a dotted line
in Fig. 10.10.
Fix a sheet of white paper on a drawing board using drawing, pins
Place a rectangular plass slab over the sheet in the middle
Draw the outline of the slab with a pencil Tetus name the outline
can anyone explain it and pls give observations and imp points regarding this activity .......tq this is belongs to sci
Answers
Answer:
Aim : To find the plane of reflection.
Required material: Mirror strip, drawing board, white paper, pins, clamps, scale
and pencil.
Procedure :
Take a drawing board and fix a white paper on it with the help of clamps.
Draw a straight line AB at the centre of the paper and also a normal line (ON) to AB at the point ‘O’.
Draw a straight line PQ making certain angle with ON fix two pins at the points P and Q on the paper vertically. PQ line indicates the incident ray.
Observe the image P’ of the pin P and Q’ of the pin Q, in the mirror kept along the line AB.
Fix two more pins R and S such that they are in the same line as that of P’ and Q’. Join R, S and O. This line indicates the reflected ray.
In this the incident ray is passing through the points P and Q touching the paper.
The reflected ray is the passing through the points ‘R’ and ‘S’ and ON is the normal.
The plane in which the incident ray, reflected ray and normal will lie is the plane of reflection.
Step-by-step explanation:
please please follow