Question

1. Anandramji, father of Amey was hard of hearing. Doctor advised him to use hearing

aid after diagnosing his ears. But he was not ready to listen to the advice of doctor

because he felt that hearing aid is a machine and would cause harm to him. Amey

told his father that hearing aid is not harmful, rather it would help him. Finally,

Anandramji decided to have the hearing aid.

a) What values are shown by Amey?

b) On what principle, hearing aid works?

2. Raje’s uncle was advised by his doctor to have echocardiography. His uncle was not

aware about the procedure adopted during the echocardiography. He thought that

this test was sensitive and hence he was not ready for it. When Raje came to know

about this, he decided to prepare his uncle for the test. He told his uncle that this

test would help the doctor to know the condition of his heart and moreover, this test

was very simple. Finally his uncle was convinced and echocardiography was

successfully performed. The information obtained by the test helped his doctor to

treat him well.

a) What is echocardiography?

b) What principle does it adapts to detect the disease?

3. Neelima was watching a programme based on ships on television. She saw a device

attached to a ship through which the man on the ship located the enemy submarines

and sent the message to the headquarters.

a) Name the device fitted in the ship.

b) On which principle does the device work? Explain using diagram.​

Answer 1

Answer:

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Explanation:

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