Physics Mcqs

Newton’s Third Law of Motion?

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Newton’s Third Law of Motion?

A. every action there is an equal and opposite reaction.
B. attraction or repulsion between two charges
C. volume of a given mass of gas increases or decreases
D. temperature remaining constant, volume of a given mass of a gas varies inversely

Oil rises up to wick in a lamp because_____________?

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Oil rises up to wick in a lamp because_____________?

A. Oil is very light
B. Oil is volatile
C. Diffusion of oil through the wick
D. Capillary action phenomenon

Capillary action (sometimes capillarity, capillary motion, capillary effect, or wicking) is the ability of a liquid to flow in narrow spaces without the assistance of, or even in opposition to, external forces like gravity

The turning effect of force is called_________?

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The turning effect of force is called_________?A. Moment
B. Momentum
C. Torque
D. None of these

The turning effect of a force is known as the moment of Force or Torque . It is the product of the force multiplied by the perpendicular distance from the line of action of the force to the pivot or point where the object will turn.
Torque (also known as moment, or moment of force) is the tendency of a force to cause or change the rotational motion of a body. It is a twist or turning force on an object. Torque is calculated by multiplying force and distance. It is a vector quantity, meaning it has both a direction and a magnitude.