5.6 hours
56 hours
1.4 x 104 hours
2.0 x 104 hours
Correct answer is A
m = Itz
1 = 100 x 5 x 10-7 x t
t = 20,000sec
= 5.6hrs
Which of the following explains the concave meniscus of water in a glass tube? ...
Natural radioactivity was discovered by ...
On a rainy day, small oil films on water show brilliant colours. This is due to ...
The force with which an object is attracted to the earth is called its ...
Which of the following methods CANNOT be used to produce a steel magnet? The ...