Hi,
This doubt has accumulated over the Geography SFG week. Two days back in the Oceans test, the solution quoted the NCERT (Fundamental Physical Class XI, Ch 14):
"As a wave approaches the beach, it slows down. This is due to friction"
Today's test (Indian physical geography) quotes from the Natural Disaster chapter (Ch 7) under Tsunamis:
"The speed of the wave in the ocean depends upon the depth of water. It is more in the shallow water than in the ocean deep"
Conceptually, I always remembered the latter, so I ended up getting both Qs wrong 
I understand context is important, but can anyone explain what you understand with both these bits put together? Since the Prelims's not going to be a sectional test and you can't go back to just one textbook, what would you mark?
