The knowledge of surface tension is applied in the following areas except in
manufacturing of rain coats
production of palm oil
floating of a needle on water
washing of plates with soapy water
Correct answer is B
No explanation has been provided for this answer.
Which of the following pairs of physical quantities is made up of vectors?
speed and displacement
mass and force
displacement and acceleration
momentum and length
Correct answer is C
No explanation has been provided for this answer.
first law of motion
second law of motion
third law of motion
law of universal gravitation
Correct answer is A
No explanation has been provided for this answer.
When the linear momentum of a body is constant, the net force acting on it
is zero
increases
decreases
remains constant
Correct answer is A
No explanation has been provided for this answer.
When an elastic material is stretched by a force, the energy stored in it is
kinetic
potential
thermal
electrical
Correct answer is B
No explanation has been provided for this answer.