NEET Questions

The length and breadth of a rectangle are measured as 12.3 cm and 4.56 cm respectively. What is the area of the rectangle expressed with the correct number of significant figures?

If $\vec{A} = 2\hat{i} + 3\hat{j}$ and $\vec{B} = -\hat{i} + 2\hat{j}$, what is the magnitude of $2\vec{A} - \vec{B}$?

If $\vec{A} = 3\hat{i} + 4\hat{j}$ and $\vec{B} = -\hat{i} + 2\hat{j}$, what is the vector $2\vec{A} - \vec{B}$?

If vector $\u{A}$ is a non-zero vector, and $n$ is a scalar, then $n\u{A}$ is a null vector if:

A patient presents with significantly reduced glomerular filtration rate and an inability to concentrate urine. Damage to which specific part of the nephron is MOST likely responsible for this impaired concentrating ability?

The sides of a rectangle are 6.01 m and 12m. taking the significant figures into account, the area of the rectangle is

Vector $\vec A$ has magnitude of 5 unit directed along east, then vector $6\vec A$

Vector $\vec A$ has magnitude of 5 unit directed along east, then vector $6\vec A$

A raceme inflorescence of Tamarindus bears 15 flowers. Each fertile anther lobe of its flower contains 215 pollen grains. What would be the total number of pollen grains produced by the inflorescence?

The vector which can give unit vector along x-axis with ${\rm{\vec A}} = 2\hat i - 4\hat j + 7\hat k,\,{\rm{\;\vec B}} = 7\hat i + 2\hat j - 5\hat k$ and ${\rm{\vec C}} = - 4\hat i + 7\hat j + 3\hat k$ is