Which of the following represents the fundamental forces of nature?
- AGravitational force; Coulomb's force; Strong surface tension force; Weak Vander Waal's force
- BGravitational force; Electromagnetic force; Strong viscous force; Weak nuclear force
- CGravitational force; Magneto static force; Strong nuclear force; Weak frictional force
- DGravitational force; Electromagnetic force; Strong nuclear force; Weak nuclear force
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Similar Questions
Match List-$I$ with List-$II$ and choose the correct answer from the options given below:
List-$I$
List-$II$
$A$. Boltzmann constant
$I$. $[M^{-1}L^3T^{-2}]$
$B$. Stefan's constant
$II$. $[ML^2T^{-1}]$
$C$. Planck's constant
$III$. $[ML^2T^{-2}K^{-1}]$
$D$. Gravitational constant
$IV$. $[ML^0T^{-3}K^{-4}]$
| List-$I$ | List-$II$ |
|---|---|
| $A$. Boltzmann constant | $I$. $[M^{-1}L^3T^{-2}]$ |
| $B$. Stefan's constant | $II$. $[ML^2T^{-1}]$ |
| $C$. Planck's constant | $III$. $[ML^2T^{-2}K^{-1}]$ |
| $D$. Gravitational constant | $IV$. $[ML^0T^{-3}K^{-4}]$ |
If the unit of force and length each be increased by four times,then the unit of energy is increased by $...$ times.
Medium
View SolutionRead each statement below carefully and state,with reasons and examples,if it is true or false:
$A$ scalar quantity is one that
$(a)$ is conserved in a process
$(b)$ can never take negative values
$(c)$ must be dimensionless
$(d)$ does not vary from one point to another in space
$(e)$ has the same value for observers with different orientations of axes.
$A$ scalar quantity is one that
$(a)$ is conserved in a process
$(b)$ can never take negative values
$(c)$ must be dimensionless
$(d)$ does not vary from one point to another in space
$(e)$ has the same value for observers with different orientations of axes.
Medium
View SolutionThe pair of physical quantities not having the same dimensions is:
Match the entries in List-$I$ with those in List-$II$.$A$. Unified interaction reducing the number of fundamental forces from four to three $(i)$ Strong interaction $B$. Force between two molecules separated by a distance near about the sum of the molecular radii $(ii)$ Gravitational force $C$. Nuclear binding force $(iii)$ Electroweak interaction $D$. Bodies of astronomical proportions $(iv)$ Electromagnetic interaction
| $A$. Unified interaction reducing the number of fundamental forces from four to three | $(i)$ Strong interaction |
| $B$. Force between two molecules separated by a distance near about the sum of the molecular radii | $(ii)$ Gravitational force |
| $C$. Nuclear binding force | $(iii)$ Electroweak interaction |
| $D$. Bodies of astronomical proportions | $(iv)$ Electromagnetic interaction |
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