# Communication System-Bandwidth of Signals (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics): Questions 1 - 3 of 3

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## Question number: 1

» Communication System » Bandwidth of Signals

MCQ▾

### Question

What is the function of a screw gauge in the experiment of determining Young’s modulus of a wire?

### Choices

Choice (4) Response

a.

It measures the length of the wire.

b.

It measures the diameter of the wire.

c.

It measures the extension in the wire.

d.

## Question number: 2

» Communication System » Bandwidth of Signals

MCQ▾

### Question

In an experiment for measurement of young’s modulus, following readings are taken. Load = 3.00 kg, length = 2.820 m, diameter - 0.041 cm and extension = 0.87. Determine the percentage error in the measurement of Y.

### Choices

Choice (4) Response

a.

+ 15%

b.

+ 6.5%

c.

+ 5%

d.

+ 5.5%

## Passage

The electron density of a layer of ionosphere at a height 150 km from the earth’s surface is 9 ⨯ 10 9 per m 3. For the sky transmission from this layer up to a range of 250 km,

## Question number: 3 (1 of 1 Based on Passage) Show Passage

» Communication System » Bandwidth of Signals

MCQ▾

### Question

Maximum usable frequency is,

### Choices

Choice (4) Response

a.

3.5 Hz

b.

3.5 ⨯ 10 6 HZ

c.

3.5 ⨯ 10 10 Hz

d.

3.5 ⨯ 10 3 Hz

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