NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 1808 - 1812 of 2320

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Question number: 1808

» Experimental Skills » Potentiometer

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MCQ▾

Question

Which device is used to measure the potential difference between two points of a conductor in the laboratory?

Choices

Choice (4)Response

a.

Potentiometer

b.

Galvanometer

c.

Voltmeter

d.

Ammeter

Question number: 1809

» Experimental Skills » Ohm's Law

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MCQ▾

Question

Which two circuit components are connected in parallel in the following circuit diagram?

Circuit diagram consists of ammeter

Circuit Diagram Consists of Ammeter

Choices

Choice (4)Response

a.

Voltmeter and resistor

b.

Ammeter and resistor

c.

Rheostat and voltmeter

d.

Voltmeter and ammeter

Question number: 1810

» Communication System » Basic Elements of Communication System

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MCQ▾

Question

A laser beam is used for carrying out surgery because it

Choices

Choice (4)Response

a.

Is highly directional

b.

Is highly monochromatic

c.

Can be sharply focused

d.

Is highly coherent

Question number: 1811

» Oscillations and Waves » Standing Waves in Strings and Organ Pipes

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MCQ▾

Question

An open organ pipe is in resonance in its 2 nd harmonic with tuning fork of frequency f 1 now; it is closed at one end. If the frequency of the tuning fork is increased slowly from f l then again a resonance is obtained with a frequency f 2. If in this case the pipe vibrates n th harmonics then

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 1812

» Oscillations and Waves » Reflection of Waves

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Assertion-Reason▾

Question

Assertion (Ꭺ)

Velocity of particles, while crossing mean position (in stationary waves) varies from maximum at antinodes to zero at nodes.

Reason (Ꭱ)

Amplitude of vibration at antinodes is maximum and at nodes, the amplitude is zero, and all particles between two successive nodes cross the mean position together.

Choices

Choice (4)Response

a.

Both Ꭺ and Ꭱ are false

b.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

c.

Ꭺ is true but Ꭱ is false

d.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

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