Question

Statements I: Block $A$ is moving on the horizontal surface towards the right under the action of force $F$. All surfaces are smooth. At the instant shown, the force exerted by block $A$ on block $B$ is equal to the net force on block $B$.
Statement II: From Newton’s Third Law, the force exerted by Block $A$ on Block $B$ is equal in magnitude to force exerted by block $B$ on $A$.

• A. Both Statements I and II are true and Statement II is correct explanation of Statement I
• B. Both Statements I and II are true but Statement II is not correct explanation of Statement I
• C. Statement I is true and statement II is false
• D. Statement I is false and statement II is true

Answer 1

The correct option is D Statement I is false and statement II is true

The forces acting on $B$ are Normal Reaction (horizontal to the right) and mg (weight downwards). Hence Statement I is false.
Statement II is Newton's 3rd law of motion which is always true.
Hence, option $\left(d\right)$ is the correct answer.