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Speed of train = 72 × 5/18 = 20 m/s Length of train = 20 × 8 = 160 metres Desired time = (200 + 160)/(1.20 × 20) = 15 seconds
Twinkling of the Stars is due to the phenomenon of
Which of the following is a vector quantity?
In which material does sound travel the fastest?
Which of the following is/are NOT scalar quantities?
Which medium cannot propagate sound waves?
With reference to the types of electromagnetic waves, consider the following statements:
(I) Radio waves have the highest wavelength range among ...
______ is an important metal to form amalgam.
The time period of a second’s pendulum is –
What is the speed of light in air?
Temperature of the Sun is measured by___________