Rate of change of momentum is called:-

In SI system, if the medium between two point charges is _____ ,then the value of K is 9 × 10¹⁹ Nm²C²:-

The total number of proton in nucleus or total number of electrons in the orbit is:-

Value of Gravitational constant is ………….?

Vertical motion of two bodies attached to the end of string that passes over a frictionless pulley. Then tention 'T' is equal to:-

By ripple tank we can produce:-

RF stands for ……………..

10^-15 is equal to _____ femto:-

10⁹ is equal to __-- giga:-

A wheel rotates about an axis passing through the centre and perpendicular to the plane with slowly increasing angular speed. Thus it has

The Coulomb's forces F12 and F21 acting on the q1 and q2 always act along the:-

Sound level in dB is given by:-

Limiting friction is always ________ than rolling friction:-

Which of the following does not change when the wave change its medium:-

Formula for potential energy is P.E = ________?

2 × 10⁸ is the speed of light in:-

The study of magnetic effect of current is called:-

The density of a substance  can be found with the help of:-

Loudness of sound depends on_____of vibrating body:-

Potential energy of simple harmonic oscillator is maximum at:-

A car is made on the principles of?

Mercury is used as thermometric material because:-

In far-sightedness, the image forms_______.