NEET Physics: Questions 83 - 86 of 2099
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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: 83 (2 of 2 Based on Passage) Show Passage
Question number: 84
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
The velocity of the particle is zero at t = 1 second
The velocity of the particle is zero at t = 0 second
The acceleration of the particle is zero at t = 0 second
The velocity and acceleration of the particle are never zero
Question number: 85
A car accelerates from rest at a constant rate 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
Question number: 86
Number of significant figures in 0.005 is one and that in 0.500 is three.
This is because zero is not significant.
|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|