Choose the corredct statement :...

Choose the corredct statement :

the magnitudes of speed and velocity are same when a body travels in a stright line path.

Average speed ofa moving body can be equal to zero, but its average velocity cannot be equal to zero.

To describe the velocity , direction is necessary.

Both (A) and ©

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Choose the correct statement :

Kinetic energy of the particle is maximum at outer part of the spiral

Kinetic energy of the particle is maximum at inner part of the spiral

Kinetic energy of the particle first decreases then increases during motion

Kinetic energy of the particle remains constant during motion along spiral path

Osmotic pressure is negative pressure of the solution

Plasmolysis occurs when water moves inside the cell

The pressure exerted by the protoplast due to entry of water against the cell wall is pressure potential

If the solute molecules increases in solution then osmotic pressure of solution decreases

Current sensitivity of a moving coil galvanometer is inversely proportional to the magnetic induction,

To colivert a galvanometer into an ammeter, a high resistance is connected in series.

To convert a galvanometer into a voltmeter, a low resistance is connected in parallel.

Voltage sensitivity of a moving coil galvanometer is directly proportional to the magnetic induction