Home
Class 9
PHYSICS
Read the given statements and mark the c...

Read the given statements and mark the correct option.
Statement 1: The weight of the body becomes zero at the centre of the earth.
Statement 2: As the distance from centre of earth decreases, acceleration due to gravity also decreases.

A

Both statement 1 and statement 2 are true and statement 2 is the correct explanation of statement 1.

B

Both statement 1 and statement 2 are true but statement 2 is not the correct explanation of statement 1.

C

Statement 1 is true but statement 2 is false

D

Both statement 1 and statement 2 are false.

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question, we need to analyze both statements provided: **Statement 1:** The weight of the body becomes zero at the center of the earth. **Statement 2:** As the distance from the center of the earth decreases, acceleration due to gravity also decreases. ### Step-by-Step Solution: 1. **Understanding Weight at the Center of the Earth:** - The weight of an object is given by the formula: \[ W = mg \] where \( m \) is the mass of the object and \( g \) is the acceleration due to gravity. - At the center of the Earth, the gravitational force exerted by the mass of the Earth surrounding the object cancels out. Therefore, the effective gravitational acceleration \( g' \) at the center is zero. - Thus, the weight \( W \) becomes: \[ W = m \cdot 0 = 0 \] - **Conclusion:** Statement 1 is **TRUE**. 2. **Understanding Acceleration Due to Gravity:** - The acceleration due to gravity \( g' \) at a depth \( d \) inside the Earth can be calculated using the formula: \[ g' = g \left(1 - \frac{d}{R}\right) \] where \( R \) is the radius of the Earth. - As we move from the surface of the Earth towards the center, the depth \( d \) increases, which means \( \frac{d}{R} \) increases. Consequently, \( g' \) decreases. - Therefore, as the distance from the center of the Earth decreases (i.e., as we go deeper), the acceleration due to gravity \( g' \) also decreases. - **Conclusion:** Statement 2 is **FALSE**. 3. **Final Evaluation:** - Since Statement 1 is true and Statement 2 is false, we conclude that: - **Statement 1 is TRUE.** - **Statement 2 is FALSE.** ### Final Answer: - The correct option is that **Statement 1 is true and Statement 2 is false.**

To solve the question, we need to analyze both statements provided: **Statement 1:** The weight of the body becomes zero at the center of the earth. **Statement 2:** As the distance from the center of the earth decreases, acceleration due to gravity also decreases. ### Step-by-Step Solution: 1. **Understanding Weight at the Center of the Earth:** ...
Promotional Banner

Topper's Solved these Questions

  • GRAVITATION

    SCIENCE OLYMPIAD FOUNDATION |Exercise ACHIEVERS SECTION (HOTS) |5 Videos
  • MOTION

    SCIENCE OLYMPIAD FOUNDATION |Exercise ACHIEVERS SECTION (HOTS)|5 Videos

Similar Questions

Explore conceptually related problems

Assertion: A body becomes weightless at the centre of earth. Reason: As the distance form centre of earth decreases, acceleration due to gravity increases.

At the centre of earth the acceleration due to gravity is

Weight of a body at the centre of the earth is zero because

At which depth from earth surface acceleration due to gravity is decreased by 1%

At which depth from Earth surface, acceleration due to gravity is decreased by 1 % ?

Spot the correct statements : The acceleration due to gravity 'g' decreases if

One goes from the centre of the earth to a distance two third the radius of the earth. The acceleration due to gravity is highest at

Spot the wrong statement : The acceleration due to gravity ‘ g ’ decreases if

At the centre of the earth , the value of the acceleration due to gravity becomes zero.