Question

Two anta of length 1 cm and 1.2 cm crawl in opposite direction with average speeds 2 and per second respectively. how many seconds will they take to cross each other​

Answer 1

Answer:

Let us move the mirror to the point Q. Ant is covering a distance of PQ(=60cm) in 2×60s. ∠PQM=30

0

.

From similar triangle we get, ∠MQ

1

P

1

=30

0

Since ∠PQP

1

=60

0

, we get PQ=P

1

Q

1

=PP

1

=60cm

Now, PP

1

=60cm and QQ

1

=0cm.

So, the rate at which the distance between ant and its image change is

2×60

60

cm/s=0.5cm/s

solution

Step-by-step explanation:

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