Sound — Physics STD 10 — Question

How does the angle of deviation depend on the refracting angle of the prism?

Give one use of ultraviolet radiations .

Write the approximate value of the speed of sound in water.

Give one example of a class I lever where mechanical advantage is more than one ?

A ray of light incident at an angle of incidence ‘i’ passes through an equilateral glass prism such that the refracted ray inside the prism is parallel to its base and emerges from the prism at an angle of emergence ‘e’.
What can you say about the value of the angle of deviation in such a situation?

Explain why stringed musical instruments, like the guitar, are provided with a hollow box.

A mixture of radioactive substances gives off three types of radiation name the radiation which has the highest ionizing power.

Name the material used for making a fuse wire. Give a reason.

The following belong to which class of lever?
Human-arm

The following belong to which class of lever?
Knife