NEET Physics: Questions 82 - 85 of 2142

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Passage

The internal radius of a 1 m long resonance tube is measured as 3 cm. A tuning fork of frequency 3500Hz is used. The first resonating length is measured as 14.6 cm and the second resonating length is measured as 24.0 cm.

Question number: 82 (2 of 2 Based on Passage) Show Passage

» Physics and Measurement » Errors in Measurement

MCQ▾

Question

Calculate the end correction.

Choices

Choice (4) Response

a.

9.9 cm

b.

9.2 cm

c.

9.1 cm

d.

9.4 cm

Question number: 83

» Kinematics » Motion in a Straight Line

MCQ▾

Question

The position of a particle moving in the xy-plane at any time t is given by x = (4t 2 - 8t) metres, y = (5t 2 - 10t) metres. Select the correct statement about the moving particle from the following

Choices

Choice (4) Response

a.

The velocity of the particle is zero at t = 1 second

b.

The velocity of the particle is zero at t = 0 second

c.

The acceleration of the particle is zero at t = 0 second

d.

The velocity and acceleration of the particle are never zero

Question number: 84

» Kinematics » Motion in a Straight Line

MCQ▾

Question

A car accelerates from rest at a constant rate Equation for some time, after which it decelerates at a constant rate β and comes to rest. If the total time elapsed is t, then the maximum velocity acquired by the car is

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 85

» Physics and Measurement » Errors in Measurement

Assertion-Reason▾

Assertion (Ꭺ)

Number of significant figures in 0.005 is one and that in 0.500 is three.

Reason (Ꭱ)

This is because zero is not significant.

Choices

Choice (4) Response

a.

Ꭺ is false but Ꭱ is true

b.

Both Ꭺ and Ꭱ are false

c.

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

d.

Ꭺ is true but Ꭱ is false

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