# While ascending a hill, the driver of the vehicle keeps the gear ratio

- Equal 1
- Less than 1
- Greater than 1
- Either equal to or greater than 1

Ans: While ascending a hill Gear Ratio should be “Either equal to or greater than 1”.

**Gear Ratio:** The ratio between angular velocity of input gear to the angular velocity of output gear. It is represented by **R**.

Gear Ratio (R) =

Where w is angular velocity, N is number of teeth on gear- R = \frac{\omega_A}{\omega_B} = \frac{N_B}{N_A}
**Velocity:**

- —- r is radius of gear.