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The frequency of ultrasonic waves is:
Which of the following is an example of a non-renewable source of energy?
The mass of a star is two times the mass of the Sun. How it will come to an end?
A device used for converting A.C. into D.C. is called –
Which of the following statement is correct?
I. Friction is caused by the irregularities on the two surfaces in contact
II. Friction is a necessary evil
A body starts from rest and accelerates uniformly. After t seconds, it covers a distance S. What is the ratio of the distance covered in the first half ...
A particle moves along the x-axis such that its velocity varies with position as
v(x) = k√(a2 – x2)
where k...
In cricket match, while catching a fast moving ball, a fielder in the ground gradually pulls his hands backwards with the moving ball to reduce the velo...
The ratio of the total distance traveled by a body to the total time taken is its:
