Question
What is the speed of a train? Statement I: The
train crosses a pole in 10 seconds. Statement II: The length of the train is 240 metres. Statement III: The train crosses a platform of equal length in 20 seconds.Solution
From I and II, Speed = 240/10 = 24 m/sec. From II and III, Speed = 240/20 = 12 m/sec. From II and either I or III, we can find the speed of the train.
A car increases its speed from 10 m/s to 30 m/s in 5 seconds. What is its acceleration? Â
The material which can be deformed permanently by heat and pressure is called a:
A particle dropped from the top of a tower uniformly falls on ground at a distance which is equal to the height of tower. Which of the following paths ...
The charge of an electron is approximately:
When a capacitor is fully charged in a DC circuit, the current through it is:
Which of the following statement is correct?
I. Value of ‘g’ is higher at poles than equator
II. Weight of an object at moon is 1...
If a body of mass 5 kg is raised to 10 meters height, find its potential energy. (g = 9.8 m/s²) Â
Which of the following phenomena establishes the transverse nature of light waves?
The emission of a beta-minus particle from a nucleus results in:
What is the acceleration due to gravity on the Moon? Â
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