Assertion: The accelerated motion of an object may be due to change in magnitude of velocity or direction or both of them.

Question

Assertion and Reason type Question.

Mark the correct choice as: 

(a) If both assertion and reason are true and reason is the correct explanation of assertion. 

(b) If both assertion and reason are true but reason is not the correct explanation of assertion. 

(c) If assertion is true but reason is false. 

(d) If assertion is false but reason is true.

1. Assertion: The accelerated motion of an object may be due to change in magnitude of velocity or direction or both of them. 

Reason: Acceleration can be produced only by change in magnitude of the velocity. It does not depend the direction.

2. Assertion: The Speedometer of a car or a motorcycle measures its average speed. 

Reason: Average velocity is equal to total displacement divided by total time taken.

3. Assertion: Displacement of a body may be zero when distance travelled by it is not zero. 

Reason: The displacement is the shortest distance between initial and final position

Answer 1

1. (c) If assertion is true but reason is false.

2. (d) If assertion is false but reason is true.

3. (a) If both assertion and reason are true and reason is the correct explanation of assertion.