Physics
Nose bleeding may occur at a high altitude because:
- the atmospheric pressure decreases.
- the oxygen content of atmosphere decreases.
- the atmospheric pressure increases.
- there are strong air currents at the high altitude.
Related Questions
Pressure inside a liquid increases with:
- increase in depth.
- decrease in depth.
- decrease in density.
- none of the above.
The atmospheric pressure at sea level is nearly:
- 10 Pa
- 100,000 Pa
- 100 Pa
- 10,000 Pa
Assertion (A) : A force when applied on a body changes its mass.
Reason (R) : Force is the cause which changes the size or shape of the body.
- Both A and R are true and R is the correct explanation of A
- Both A and R are true and R is not the correct explanation of A
- Assertion is true but reason is false
- Assertion is false but reason is true
Assertion (A) : In heavy container trucks, more number of tyres are used to reduce the pressure on the ground.
Reason (R) : Larger the surface area, less is the pressure for the same thrust.
- Both A and R are true and R is the correct explanation of A
- Both A and R are true and R is not the correct explanation of A
- Assertion is true but reason is false
- Assertion is false but reason is true