Question

(a) A torch is shone onto a star-shaped card which form a shadow on the screen behind the card. What will happen to the shadow if 
1) Torch is moved away from the star 
2) Torch is moved towards the star 
(b) Explain with example that a body can show more than one type of motion at the same time​

Answer 1

Answer:

Here is your answer :-

(a) 1) As the torch is moved away from the star the size of the shadow on the screen decreases

2) As the torch is moved towards the star the size of the shadow on the screen increases

(b)Sometime a body can have more than one type of motion. Such a motion is called the mixed motion.

Example :

(i) The wheels of a moving train have both the translatory as well as the rotatory motions as it moves from position A to position B while rotating.

(ii) The earth rotates about its axis (rotatory motion) and at the same time it revolves around the sun in a curved path (curvilinear or circular motion) in a fixed time interval (periodic motion)

Explanation:

Hope It Helps You..

Please Thank My Answer.. :)

Answer 2

Answer:

a 1. if the torch is moved away from the star the shadow will become smaller

2. if the torch is moved towarda the star the shadow will become larger