(d) London, Lisbon and Accra in Ghana are close to Greenwich Meridian. But, Addis Ababa is istuated on the eastern part of Africa (i.e., longitude 38.74 E). So, Addis Ababa has a different clock time than that of London, Lisbon and Accra.
The pendulum of the clock has time period 2.04sec.
Now, No. or oscillation in 1 day = 24 x 3600/2= 43200
But, in each oscillation it is slower by (2.04 – 2.00)...
(c) its length should be decreased to keep correct time
EXPLANATION:
At high altitudes, the value of g decreases. Since the time period of the pendulum T = 2π√(l/g), it will increase...
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(b) Karachi was the capital of Pakistan from 1947 – 1959. Kyoto was the capital of Japan before Tokyo. Brisbane was the capital of Australia before Cannbera in 1842 –...