It is estimated that each $cm^2$ of Earth receives about $2 \text{ calorie}$ of heat energy per minute from the Sun. This is called the solar constant. The value of the solar constant in $S.I.$ units is:
- A$2 \text{ J m}^{-2} \text{ s}^{-1}$
- B$1.4 \text{ W m}^{-2}$
- C$2.4 \text{ kW m}^{-2}$
- D$1.4 \text{ kW m}^{-2}$
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Similar Questions
Which of the following quantities has a unit but is dimensionless?
Easy
View SolutionFill 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 ....... .
Medium
View SolutionThe pair of physical quantities not having the same dimensions is:
Match the physical quantities in Column-$I$ with those in Column-$II$ having the same dimensions. The correct matching is:
$A$. Entropy $I$. Angular velocity $B$. Young's modulus of elasticity $II$. Boltzmann constant $C$. Angular momentum $III$. Energy density $D$. Decay constant $IV$. Planck's constant
| $A$. Entropy | $I$. Angular velocity |
| $B$. Young's modulus of elasticity | $II$. Boltzmann constant |
| $C$. Angular momentum | $III$. Energy density |
| $D$. Decay constant | $IV$. Planck's constant |
Match 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:
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