Question

1. What do understand by
simple machine?

2. Describe how a machine acts as a force multiplier?

3. Rays of the light can bend in any direction :-) True/ False

4. The image formed by a pinhole camera is real and inverted :-) True / False

5.The speed of light is about ________ in vacuum or air.​

Answer 1

Answer:

simple machine is a tool which makes our work easier and faster with use of less energy

Answer 2

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1. What do understand by

1. What do understand bysimple machine?

➜ Simple machines are useful because they reduce effort or extend the ability of people to perform tasks beyond their normal capabilities.

2. Describe how a machine acts as a force multiplier?

➜ A simple machine like a bottle opener (Class II lever) multiplies the applied force and much less effort is required to open the cap. Hence, it acts as a force multiplier.

3. Rays of the light can bend in any direction.

➜ True

4. The image formed by a pinhole camera is real and inverted.

➜ False - The Image Formed By A Pinhole Camera Is Always Inverted.

5. The speed of light is about 186,282 miles per second (299,792 kilometers per second) in vacuum or air.