# NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 1812 - 1814 of 2184

Access detailed explanations (illustrated with images and videos) to 2184 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. Subscription can be renewed yearly absolutely FREE! View Sample Explanation or View Features.

Rs. 550.00 or

How to register?

## Question number: 1812

Edit
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

## Question number: 1813

Edit
MCQ▾

### Question

A whistle giving out 461 Hz approaches a stationary observer at a speed of 44 m/s. The frequency heard by the observer in Hz is

### Choices

Choice (4) Response

a.

430 Hz

b.

550 Hz

c.

532 Hz

d.

545 Hz

## Question number: 1814

Edit
MCQ▾

### Question 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.

b.

c.

d.