PART - 1 CH - 4 Laws of Motion — Physics STD 11 Science — Question

Latent heat is the amount of heat required to change the state of a substance without changing its temperature.

Water is flowing in a horizontal pipe of un equal area of cross-section. At a narrow place in the pipe the velocity will be higher and the pressure will he lower.

I = 2 E_r

Force causes acceleration and deceleration of the object.

When we throw an object upwards, the acceleration is in the direction of velocity.

Screw gauge instrument is used to measure the curvature of the plane.

The motion of a bomb dropped from an airplane while moving horizontally is an example of projectile motion.

\begin{array}{l}\text { Magnitude of resultant vector } \vec{R}, \\\qquad R=\sqrt{P+Q+2 P Q \cos\theta}\end{array}