State two factors on which the speed of a wave travelling in a medium depends. - Noon Academy

State two factors on which the speed of a wave travelling in a medium depends.

Class 10 | ICSE | Physics | Selina | Sound

State two factors on which the speed of a wave travelling in a medium depends.

The elasticity and density of the medium through which sound travels determine its speed. In liquids, sound travels faster than in gases, and in solids, sound travels faster than in liquids. Sound travels quicker in a medium with higher flexibility and lower density.

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A …… lens is used to correct myopia and a ….. lens is used to correct hypermetropia.
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(A) active mass
(B) molecular weight
(C) atomic weight
(D) equivalent weight

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If the points $A(a, 0), B(0, b)$ and $C(1,1)$ are collinear, prove that $\frac{1}{a}+\frac{1}{b}=1$

If $A(-2,0), B(0,4)$ and $C(0, k)$ be three points such that area of a $A B C$ is 4 sq units, find the value of $k$ .

Find the value of $k$ for which the area of a ABC having vertices $A(2,-6), B(5,4)$ and $C(k, 4)$ is 35 sq units.

Find the value of $k$ for which the points $A(1,-1), B(2, k)$ and $C(4,5)$ are collinear.

Find the value of $k$ for which the points $P(5,5), Q(k, 1)$ and $R(11,7)$ are collinear.

Find the value of $k$ for which the points $A(3,-2), B(k, 2)$ and $C(8,8)$ are collinear.

Use determinants to show that the following points are collinear. $P(-2,5), Q(-6,-7)$ and $R(-5,-4)$

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