Units and Measu...

When $$24.25\times { 10 }^{ 3 }$$ is rounded off to three significant figures, it becomes :

Universal gravitational constant is given by $$6.67\times { 10 }^{ -11 }N{ m }^{ 2 }{ kg }^{ -2 }$$. Then the no. of significant figures in it is:

The radius of a sphere is $$5$$ cm. Its volume will be given by (according to the theory of significant figures) :

Two numbers are given as i) 20.96 and ii) 0.0003125. Rounding off above numbers to 3 significant figures will lead to :

The dimension of time in Electric field intensity is :

When we express the velocity of light, $$30,00,00,000/ ms^{-1}$$, in standard form up to three significant figures, it's value is:

If $$'m$$' is the mass of a body, $$'a'$$ is amplitude of vibration, and $$'w '$$ is the angular frequency then  $$\frac { 1 }{ 2 } { ma }^{ 2 }{ w }^{ 2 }$$ has same dimensional formula as :

$$\left[ { M }^{ 1 }{ L }^{ 2 }{ T }^{ -3 }{ A }^{ -2 } \right] $$is the dimensional formula of :

The dimension of magnetic induction in $$M, L, T$$ and $$C$$ (Coloumb) is given as:

The ratio $$\dfrac { L }{ R } $$ has the dimensions of:
 [ L:Inductance R:Resistance]