Force, Work, Energy and Power — Physics STD 10 — Question

Under what circumstances does one get an electric shock from an electrical gadget?

What are the physical parameters on which the kinetic energy of a body depends?

State two applications of a convex lens.

How much force is applied on a body when 150 J of work is done in displacing the body through a distance of 10 m in the direction of the force?

What do you mean by nuclear energy? What is responsible for its release?

Draw a diagram showing the directions of three magnetic field lines due to a straight wire carrying current. Also show the direction of current in the wire.

What do you mean by wave motion?

What do you understand by the term 'temperature'?

State a law, which determines the direction of magnetic field around a current carrying wire.

(i) State the relationship between mechanical advantage, velocity ratio and efficiency.
(ii) Name the term that will not change for a machine of a given design.