Which of the following is not the unit of distance?
A. Angstrom
B. Light year
C. Micron
D. Milestone
Answer: Option D
Solution (By Examveda Team)
This question asks us to identify which option is not used to measure distance.Let's look at each option:
Angstrom (Å): This is a very small unit of length, often used to measure the size of atoms and molecules. It's a unit of distance.
Light year (ly): This is a very large unit of distance. It represents the distance light travels in one year. It's a unit of distance.
Micron (µm): Also known as a micrometer, this is a unit of length equal to one millionth of a meter. It's used to measure small distances, making it a unit of distance.
Milestone: A milestone is a marker indicating distance along a road or path. It is not a unit of measurement itself; it's a physical marker showing a point in a distance.
Therefore, Milestone is not a unit of distance. The other options are all units used to measure length or distance.
This Question Belongs to Mechanical Engineering >> Engineering Mechanics
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Comments (2)
The resultant of two equal forces P making an angle $$\theta ,$$ is given by
A. $$2{\text{P}}\sin \frac{\theta }{2}$$
B. $$2{\text{P}}\cos \frac{\theta }{2}$$
C. $$2{\text{P}}\tan \frac{\theta }{2}$$
D. $$2{\text{P}}\cot \frac{\theta }{2}$$
A. Equal to
B. Less than
C. Greater than
D. None of these
If a number of forces are acting at a point, their resultant is given by
A. $${\left( {\sum {\text{V}} } \right)^2} + {\left( {\sum {\text{H}} } \right)^2}$$
B. $$\sqrt {{{\left( {\sum {\text{V}} } \right)}^2} + {{\left( {\sum {\text{H}} } \right)}^2}} $$
C. $${\left( {\sum {\text{V}} } \right)^2} + {\left( {\sum {\text{H}} } \right)^2} + 2\left( {\sum {\text{V}} } \right)\left( {\sum {\text{H}} } \right)$$
D. $$\sqrt {{{\left( {\sum {\text{V}} } \right)}^2} + {{\left( {\sum {\text{H}} } \right)}^2} + 2\left( {\sum {\text{V}} } \right)\left( {\sum {\text{H}} } \right)} $$
A. $${\text{a}} = \frac{\alpha }{{\text{r}}}$$
B. $${\text{a}} = \alpha {\text{r}}$$
C. $${\text{a}} = \frac{{\text{r}}}{\alpha }$$
D. None of these
Milestone is a term used in progress . It doesn't have a valid unit or symbol unlike other units.
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