Calorimetry — Physics STD 10 — Question

Define a kilowatt hour. How is it related to joule?

A radioactive source emits three types of radiations.

Name the radiation which is most penetrating.

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

Name the physical quantity that represents the ratio of potential difference and current.

What do you mean by dispersion?

Write the range of wavelength of the visible spectrum.

With reference to the direction of action, how does a centripetal force differ from centrifugal force?

Define calorimetry ?

A stick partly immersed in water appears to be bent. Draw a ray diagram to show the bending of the stick when placed in water and viewed obliquely from above.

Is it easier to turn a steering wheel of large diameter than that of small diameter? Why?