NEET Physics: Questions 1813 - 1816 of 2098

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Question number: 1813

» Experimental Skills » Multimeter

MCQ▾

Question

Circuit diagram consists of voltmeter, ammeter, battery.

Circuit Diagram Consists of Voltmeter, Ammeter, Battery.

In figure circuit diagram consists of voltmeter, ammeter, battery and resistors is shown.

In the circuit shown, voltmeter is ideal and its least count is 0.1 V. The least count of ammeter is 1 mA. Let reading of the voltmeter is 30.0 V and the reading of ammeter is 0.020 A. Calculate the value of resistance R within error limits.

Choices

Choice (4) Response

a.

(1.2±0.05)kΩ

b.

(1.5±0.08)kΩ

c.

(1.5±0.05)kΩ

d.

(1.2±0.08)kΩ

Question number: 1814

» Communication System » Bandwidth of Transmission Medium

MCQ▾

Question

Audio signal cannot be transmitted because

Choices

Choice (4) Response

a.

The signal cannot be amplified for distance communication

b.

The signal has more noise

c.

The transmitting antenna length is very large and impracticable

d.

The transmitting antenna length is very small to design

Question number: 1815

» Communication System » Propagation of Electromagnetic Waves in the Atmosphere

MCQ▾

Question

In short wave communication which of the following frequencies will be reflected back by the ionosphere layer, having electron density 5 ⨯ 10 9 per m 3.

Choices

Choice (4) Response

a.

0.18 MHz

b.

0.14 MHz

c.

0.28 MHz

d.

0.63 MHz

Question number: 1816

» Gravitation » Universal Law of Gravitation

MCQ▾

Question

A satellite of mass m is revolving in a circular orbit of radius r. The relation between the angular momentum J of satellite and mass m of earth will be –

Choices

Choice (4) Response

a.

J=GMmr

b.

J=GMm

c.

J=GMm2r

d.

J=mrM

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