A scalar quantity is defined as the physical quantity that has only magnitude, for example, mass and electric charge. Pressure has only magnitude and not definite direction, hence pressure is a scalar quantity.
On the other hand, a vector quantity is defined as the physical quantity that has both magnitude as well as direction like force, weight, acceleration and velocity.
28) Pick out the scalar quantity
Answer is:
pressure
Explanation:
Related General Physics MCQ with Answers
Answer is:
Alternating current to Direct current
Explanation:
Because in rectifier circuit there will be a diode in which the current flows in forward bias only when we apply alternating current so it is a unidirectional current of ripples so it is used to covert ac to dc.
Answer is:
neutrons
Explanation:
Neutron reside in the nucleus of the atom and it is heavy than other elementary particles hence it is imposssible to have a emission of neutron.
Answer is:
longitudinal
Explanation:
Sound waves exist as variations of pressure in a medium such as air. They are created by the vibration of an object, which causes the air surrounding it to vibrate. The vibrating air then causes the human eardrum to vibrate, which the brain interprets as sound.
Answer is:
zero
Explanation:
Bar magnet is a magnet having two poles north and south at the end of magnet producing constant or uniform magnetic field since the magnetic lines of forces are more at the poles produced by them so magnetic field at the centre of magnet is zero.