Question

Answer in one or two sentences:-

Q1. State two effects of force.
Q2. What is the use of electroscope?
Q3.How is sound produced.​

Answer 1

Answer:

1. Two effects of a force applied on a body are: (i) It can change the state of movement of the body on which force is applied, i.e. it can move a stationary object or stop a moving object. (ii) It can change the shape and size of an object
2. Electroscope, instrument for detecting the presence of an electric charge or of ionizing radiation, usually consisting of a pair of thin gold leaves suspended from an electrical conductor that leads to the outside of an insulating container.
3. Sound is produced when an object vibrates, creating a pressure wave. ... As the particles vibrate, they move nearby particles, transmitting the sound further through the medium. The human ear detects sound waves when vibrating air particles vibrate small parts within the ear.

Explanation:

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Answer 2

Answer:

Q.1) (i) it can change the state of moment of the body on which force is applied ,i.e. it can move a stationary object or stop a moving object.

(ii) it can change the shape and size of an object.

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