Explain crest and trough in a transverse wave.

Important Questions on Model Questions for Year-End Examination

MEDIUM

9th CBSE

IMPORTANT

Physics>Chapter 7 - Model Questions for Year-End Examination>Model Questions for Year-End Examination>Q (z)

How will you show that sound waves obey the laws of reflection?

MEDIUM

9th CBSE

IMPORTANT

Physics>Chapter 7 - Model Questions for Year-End Examination>Model Questions for Year-End Examination>Q (a)

For a body moving along a circular path, show that linear speed $=$ angular velocity $\times$ radius of the circle.

EASY

9th CBSE

IMPORTANT

Physics>Chapter 7 - Model Questions for Year-End Examination>Model Questions for Year-End Examination>Q (b)

Describe the state of weightlessness with the help of a suitable example.

HARD

9th CBSE

IMPORTANT

Physics>Chapter 7 - Model Questions for Year-End Examination>Model Questions for Year-End Examination>Q (c)

The speed-time graph of an object having a mass of $50 \mathrm{g}$ moving along a straight line path is shown here. Find the force acting on the object.

EASY

9th CBSE

IMPORTANT

Physics>Chapter 7 - Model Questions for Year-End Examination>Model Questions for Year-End Examination>Q (d)

What is meant by uniformly accelerated motion?

EASY

9th CBSE

IMPORTANT

Physics>Chapter 7 - Model Questions for Year-End Examination>Model Questions for Year-End Examination>Q (d)

What is meant by non-uniformly accelerated motion? Give one example.

EASY

9th CBSE

IMPORTANT

Physics>Chapter 7 - Model Questions for Year-End Examination>Model Questions for Year-End Examination>Q (e)

The figure given below shows the distance-time graph of three people $A, B$ and $C$. On the basis of the graph, answer the following question.
Which of the three is travelling the fastest?

EASY

9th CBSE

IMPORTANT

Physics>Chapter 7 - Model Questions for Year-End Examination>Model Questions for Year-End Examination>Q (e)

The figure given below shows the distance-time graph of three people $A, B$ and $C$. On the basis of the graph, answer the following question.
Are all three people ever at the same point on the road?