Medium
Fill in the blanks:
$(a)$ To measure the direct distance of a mountain,....... is used.
$(b)$ For the measurement of time,the ........... clock is the most accurate.
$(c)$ Rounding off $15.753$ to three significant figures gives ....... .
$(a)$ To measure the direct distance of a mountain,....... is used.
$(b)$ For the measurement of time,the ........... clock is the most accurate.
$(c)$ Rounding off $15.753$ to three significant figures gives ....... .
(A) Echo method or reflection method is used to measure the distance of a mountain.
$(b)$ Cesium atomic clock is the most accurate clock for the measurement of time.
$(c)$ To round off $15.753$ to three significant figures,we look at the fourth digit,which is $5$. Since the digit following the third significant figure $(7)$ is $5$ followed by non-zero digits $(3)$,we round up the third digit. Thus,$15.753$ becomes $15.8$.
$(b)$ Cesium atomic clock is the most accurate clock for the measurement of time.
$(c)$ To round off $15.753$ to three significant figures,we look at the fourth digit,which is $5$. Since the digit following the third significant figure $(7)$ is $5$ followed by non-zero digits $(3)$,we round up the third digit. Thus,$15.753$ becomes $15.8$.
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Similar Questions
Match the List-$I$ with List-$II$:
List-$I$ List-$II$ $A$. Spring constant $I$. $ML^2 T^{-2} K^{-1}$ $B$. Thermal conductivity $II$. $ML^0 T^{-2}$ $C$. Boltzmann constant $III$. $ML^2 T^{-3} A^{-2}$ $D$. Inductive reactance $IV$. $MLT^{-3} K^{-1}$
Choose the correct answer from the options given below:
| List-$I$ | List-$II$ |
| $A$. Spring constant | $I$. $ML^2 T^{-2} K^{-1}$ |
| $B$. Thermal conductivity | $II$. $ML^0 T^{-2}$ |
| $C$. Boltzmann constant | $III$. $ML^2 T^{-3} A^{-2}$ |
| $D$. Inductive reactance | $IV$. $MLT^{-3} K^{-1}$ |
Choose the correct answer from the options given below:
DifficultJEE MAIN 2026
View SolutionIf the gravitational force,electromagnetic force,strong nuclear force,and weak nuclear force are represented by $GF, EMF, SNF$,and $WNF$ respectively,then which of the following represents the correct order of their relative strengths?
Easy
View SolutionMatch List $I$ with List $II$ :
List $I$ (Physical Quantity) List $II$ (Dimensional Formula) $(A)$ Pressure gradient $(I)$ $[M^0 L^2 T^{-2}]$ $(B)$ Energy density $(II)$ $[M^1 L^{-1} T^{-2}]$ $(C)$ Electric Field $(III)$ $[M^1 L^{-2} T^{-2}]$ $(D)$ Latent heat $(IV)$ $[M^1 L^1 T^{-3} A^{-1}]$
Choose the correct answer from the options given below:
| List $I$ (Physical Quantity) | List $II$ (Dimensional Formula) |
|---|---|
| $(A)$ Pressure gradient | $(I)$ $[M^0 L^2 T^{-2}]$ |
| $(B)$ Energy density | $(II)$ $[M^1 L^{-1} T^{-2}]$ |
| $(C)$ Electric Field | $(III)$ $[M^1 L^{-2} T^{-2}]$ |
| $(D)$ Latent heat | $(IV)$ $[M^1 L^1 T^{-3} A^{-1}]$ |
Choose the correct answer from the options given below:
The ratio of the dimension of Planck's constant and that of moment of inertia is the dimension of
MediumAIPMT 2005
View SolutionNames of units of some physical quantities are given in List-$I$ and their dimensional formulae are given in List-$II$. Match the correct pairs in the lists:
$A$. $Pa \cdot s$ $(i)$. $[L^2 T^{-2} K^{-1}]$ $B$. $N \cdot m \cdot K^{-1}$ $(ii)$. $[MLT^{-3} K^{-1}]$ $C$. $J \cdot kg^{-1} \cdot K^{-1}$ $(iii)$. $[ML^{-1} T^{-1}]$ $D$. $W \cdot m^{-1} \cdot K^{-1}$ $(iv)$. $[ML^2 T^{-2} K^{-1}]$
| $A$. $Pa \cdot s$ | $(i)$. $[L^2 T^{-2} K^{-1}]$ |
| $B$. $N \cdot m \cdot K^{-1}$ | $(ii)$. $[MLT^{-3} K^{-1}]$ |
| $C$. $J \cdot kg^{-1} \cdot K^{-1}$ | $(iii)$. $[ML^{-1} T^{-1}]$ |
| $D$. $W \cdot m^{-1} \cdot K^{-1}$ | $(iv)$. $[ML^2 T^{-2} K^{-1}]$ |
DifficultAP EAMCET 2005
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