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

State the approximate range of wavelength associated with infrared rays.

A certain nucleus A (mass number 238 and atomic number 92) is radioactive and becomes a nucleus B (mass number 234 and atomic number 90) by the loss of one particle.

Explain how you are arrived at your answer.

What is a single fixed pulley? State its one use.

Name the material used for making fuse wire.

Explain a person walking past a railway line, in the middle of night hears a ringing sound along with the sound of his footsteps.

State whether the current is a scalar or vector? What does the direction of current convey?

In the atmosphere which colour of light gets scattered the least?

How does the position of an element change in the periodic table when it emits out a beta particle?

Define the term principle axis of a lens.

Define wave velocity term in relation to a wave.