NEET (2024 Updated)-National Eligibility cum Entrance Test (Medical) Physics: Questions 1762 - 1766 of 5119

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Question 1762

Question MCQ▾

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

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Question 1763

Question MCQ▾

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

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

Edit

Question 1764

Question MCQ▾

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

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Question 1765

Question MCQ▾

An open organ pipe is in resonance in its 2nd harmonic with tuning fork of frequency f1 now; it is closed at one end. If the frequency of the tuning fork is increased slowly from fl then again a resonance is obtained with a frequency f2 . If in this case the pipe vibrates nth harmonics then

Choices

Choice (4)Response

a.

b.

c.

d.

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Question 1766

Question Assertion-Reason▾

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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