Question

1 State
State the types of sovores of light with
a
an example of foor each ? What is Biolu
-nescence?
​

Answer 1

Explanation:

Two trains are each 50 m long moving parallel towards

each other at speed 10 m/s and 15 m/s respectively. At

what time will they pass each other:

2

(a) 5

(b) 4 sec

V 3

(c) 2 sec

(d) 6 sec ?

sec