Which of the following statements is incorrect?

A. a cricketer moves his hands backwards while holding a catch

B. A person falling from a certain height receives more on a heap of sand injuries when he falls on a cemented floor than when he falls

C. It is easier to push a lawn mower than to pull it

D. Mountain roads are generally made winding upwards rather than going straight up

Options

A. A cricketer moves his hands backwards while holding a catch
B. A person falling from a certain height receives more on a heap of sand
injuries when he falls on a cemented floor than when he falls
C. It is easier to push a lawn mower than to pull it
D. Mountain roads are generally made winding upwards
rather than going straight up

Answer

B, C

Explanation

Pitch `=(2pimcostheta)/(qB) eV=1/2mv^(2)`
`=(2pisqrt(2meV))/(eB) (costheta~~1) rArr "pitch" =sqrt((8pi^(2)mV)/(eB^(2)))`
`:.` Distance from point of divergence `=sqrt((32pi^(2)mV)/(eB^(2)))`