Emission of which one of the following will produce isobars?
Alpha particles
Beta particles
Gamma rays
X-rays
Vapour pressure of liquid depends upon the
quantity of heat
temperature of liquid
specific heat of liquid
density of liquid
Which one of the following phenomena cannot be attributed to the refraction of light?
Twinkling of stars
Mirage
Rainbow
Redshift
Force can be defined on the basis of
Newton's second law of motion
Newton's first law of motion
Newton's third law of motion
Newton's law of gravitation
B.
Newton's first law of motion
Newton's first law states that a body remains at rest or in motion with a constant velocity unless acted upon by any external agent called Force. Thus, this law defines the force.
Slope of the velocity-time graph gives the
distance covered by a moving body
velocity of a moving body
acceleration of a moving body
None of the above