What is elasticity? If an external force is applied to an object and it changes or tries to change the shape and size of the object, the property of the object that obstructs this tendency of deformation, and if the force is taken away the object regains its original size and shape is elasticity. Those … Read more
Three states can be observed due to objects floating and immersion If objects weight is greater than the buoyancy of liquid than the object will immerse. If objects weight is equal to the buoyancy of liquid than the object will float immersing whole in the water. If objects weight is lesser than the buoyancy of … Read more
Why is a convex mirror called a diverging mirror? If the convex surface of a sphere acts as the reflector, that is if the regular reflection of light takes place from the convex surface of the spherical mirror, then it is called a convex mirror. The convex mirror is a diverging mirror since the parallel … Read more
The mechanical error of slide calipers If the zeroth mark of Vernier does not meet with the zeroth mark of the main scale, the error is known as the mechanical error of slide calipers.
Why can a real image not be formed by a convex mirror? If light rays emitted from a point after being reflected or refracted on a surface actually converge at a second point, then the second point is called the real image of the first point. The convex mirror is a diverging mirror since the … Read more
Explain the acceleration of an object moving in a circular path. As an object moves in a circle, it is constantly changing its direction. In all instances, the object is moving tangent to the circle. Since the direction of the velocity vector is the same as the direction of the motion of the object. The … Read more
Steel is more elastic than rubber – Explain. Elasticity is defined as the attributed property by which a body is able to resist deformation, and recovers its original shape and size when the deforming force is removed. Elasticity is measured by the value of modulus of elasticity and is the ratio of stress and strain. … Read more
A fever-attracted person feels cold but another person feels him hot, why? The body temperature of a fever-affected person is greater compared to that of his surroundings. So, heat flows from his body to the environment and he feels cold. Again, the body temperature of a normal person is less than that of a fever-affected … Read more