Physics

Text Question Q 1 What does an electric circuit mean ?Answer: A continuous and closed path along which an electric current flows is called an electric circuit. Q 2 Define the unit of current.Answer: Unit of current is ampere. If one coulomb of charge flows through any section of a conductor in one second then […]

Text Questions Q 1What is meant by power of accommodation of the eye ?Answer:The power of accommodation of the eye is the maximum variation of its power for focusing on near and far (distant) objects. Q 2A person with a myopic eye cannot see objects beyond 1.2 m distinctly. What should be the type of

Text Questions Q 1 Define the principal focus of a concave mirror.Answer: The principal focus of a concave mirror is a point on its principal axis to which all the light rays which are parallel and close to the axis, converge after reflection from the concave mirror. Q 2 The radius of curvature of a

TEXT Questions Q 1. A force of 7 N on an object. The displacement is, say 8 m, in the direction of the force as shown in figure. Let us take it that the force acts on the object through the displacement. What is the work done in this case? Solution: Q 2. When do

TEXT Questions Q 1.State the universal law of gravitation.Solution: According to universal law of gravitation, every particle in the universe attracts every other particle with a force which is directly proportional to the product of their masses and inversely proportional to the square of distance between them. The direction of force is along the line