Merits of Huygens’ wave theory of light: It gives satisfactory explanation for laws of reflection, refraction and double refraction of light assuming transverse nature of the light waves. It also explains the theory of interference and diffraction. It explains the […]
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State the postulates & drawbacks of Newton’s corpuscular theory.
Postulates of Newton’s corpuscular theory: Every source of light emits large number of tiny particles known as ‘corpuscles’ in a medium surrounding the source. These corpuscles are perfectly elastic, rigid and weightless. The corpuscles travel in a straight line with […]
What is vertical circular motion? Show that motion of an object revolving in vertical circle is non uniform circular motion.
A body revolves in a vertical circle such that its motion at different points is different then the motion of the body is said to be vertical circular motion. Consider an object of […]
What is banking of road? Explain the necessity of banking of the road.
Banking of road: The process of raising outer edge of a road over its inner edge through certain angle is known as banking of road. Necessity of banking of the road: i. When a vehicle moves along horizontal curved road, […]
State four examples where centripetal force is experienced by the body .
Examples where centripetal force is experienced by the body. I) A stone tied at the end of a string is revolved in a horizontal circle, the tension in the string provides the necessary centripetal force. It is given by equation […]
What is the difference between uniform circular motion and non uniform circular motion? Give examples.
Sr. No U.C.M Non-U.C.M 1. Circular motion with constant angular speed is known as uniform circular motion Circular motion with variable angular speed is called as non-uniform circular motion 2. For U.C.M, α = 0 For non-U.C.M, α≠ 0 3. In U.C.M, work […]
U.C.M is an accelerated motion. Justify this statement.
Definition: In U.C.M, the magnitude of linear velocity (speed) remains constant but the direction of linear velocity goes on changing i.e., linear velocity changes. The […]