Case Study and Passage Based Questions for Class 9 Science Chapter 11 Work and Energy

Case Study Questions for Class 9 Science Chapter 11 Work and Energy

In CBSE Class 9 Science Paper, Students will have to answer some questions based on Assertion and Reason. There will be a few questions based on case studies and passage based as well. In that, a paragraph will be given, and then questions based on it will be asked.

Here, we have provided case based/passage based questions for Class 9 Science Chapter 11 Work and Energy. Students can practice these questions for their exam.

Case Study/Passage Based Questions

Question 1:

Read the following and answer any four questions from (i) to (iii).

Figure shows a watch glass embedded in clay. A tiny spherical ball is placed at the edge B at a height h above the centre A.

(i) The kinetic energy of ball, when it reaches at point A is
(a) zero
(b) maximum
(c) minimum
(d) can’t say.

Answer

Answer: (b) When the ball reaches at A, its entire potential energy will be converted into kinetic energy, since height is zero.

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(ii) The ball comes to rest because of
(a) frictional force
(b) gravitational force
(c) both (a) and (b)
(d) none of these.

Answer

Answer: (c) The forces which oppose the motion of ball are frictional and gravitational.

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(iii) The energy possessed by ball at point C is
(a) potential energy
(b) kinetic energy
(c) both potential and kinetic energy
(d) heat energy.

Answer

Answer: (a) The energy possessed by the ball at point C is potential energy, because of its height h from ground.

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Also check

• CBSE Case Study Questions (6th – 12th) – All Subjects
• CBSE Assertion Reason Questions (6th – 12th) – All Subjects

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