Statement I: An object from a greater height reaches a steady terminal velocity.
Statement II: The viscous forces on a body depends upon its velocity. The greater the velocity the greater is the viscous force.

Options

A. Statement I is true, statement II is true and Statement II is a correct explanation for Statement I.
B. Statement I is true, Statement II is true and Statement II is NOT the correct explanation for Statement I.
C. Statement I is true, Statement II is false.
D. Statement I is false, Statement II is true.

Explanation

To analyze the given statements, we will break down the concepts of terminal velocity and viscous force step by step.

### Step 1: Understanding Terminal Velocity
- **Definition**: Terminal velocity is the constant speed that a freely falling object eventually reaches when the resistance of the medium (like air or water) prevents further acceleration.
- **Condition for Terminal Velocity**: This occurs when the downward force of gravity (weight of the object, mg) is balanced by the upward viscous force (Fv).

### Step 2: Analyzing Statement I
- **Statement I**: "An object from a greater height reaches a steady terminal velocity."
- When an object is dropped from a greater height, it has more time to accelerate until the viscous force equals the gravitational force. This means that it can reach terminal velocity before hitting the ground.
- **Conclusion**: Statement I is true.

### Step 3: Understanding Viscous Force
- **Definition**: Viscous force is the force exerted by a fluid on a body moving through it, which opposes the motion.
- **Dependence on Velocity**: The viscous force increases with the velocity of the object. This is because the faster an object moves through a fluid, the greater the resistance it encounters.

### Step 4: Analyzing Statement II
- **Statement II**: "The viscous forces on a body depend upon its velocity. The greater the velocity, the greater is the viscous force."
- This statement aligns with the definition of viscous force, which states that it is dependent on the velocity of the object moving through the fluid.
- **Conclusion**: Statement II is also true.

### Step 5: Relationship Between the Statements
- Statement I discusses the condition under which an object reaches terminal velocity, while Statement II explains the nature of the forces involved in that condition.
- Since Statement II provides a correct explanation for the behavior described in Statement I, we conclude that Statement I is true and Statement II is true, with Statement II being a correct explanation of Statement I.

### Final Conclusion
Both statements are true, and Statement II correctly explains Statement I.