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

State the condition when the change in the momentum of a body depends only on the change in its velocity.

Two fuse wires of the same lengths are rated 5A and 20A. Which of the two fuse wires is thick and why?

Compare the speeds of light of wavelength 4000 Å (i.e. violet light) and 8000 Å (i.e. red light) in vacuum.

A ray of light is normally incident on one face of an equilateral glass prism. Answer the following:
what will be the angle of incidence at the second face of the prism?

An electrons emitter must have how much work function and melting point.

A substance changes from its solid state to the liquid state when heat is supplied to it

What name is given to heat observed by the substance.

Name the phenomenon ?

State the position of armature coil relative to the direction of magnetic field, in a D. C. motor when the deflecting couple acting an the coil is maximum.

State whether a magnetic field is associated or not around a current carrying conductor.