NEET Physics: Questions 7 - 10 of 2099
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Question number: 7
A physical quantity x depends on quantities y and z as follows: x = Ay + B tan Cz, where A, B and C are constants. Which of the following do not have the same dimensions?
x and A
y and B/A
C and z-1
x and B
Question number: 8
The position of a particle moving in the xy-plane at any time t is given by x = (3t 2 - 6t) metres, y = (t 2 - 2t) metres. Select the correct statement about the moving particle from the following
The velocity of the particle is zero at t = 1 second
|b.||Both a. and c. are correct|
The acceleration of the particle is zero at t = 0 second
The velocity of the particle is zero at t = 0 second
Question number: 9
The magnitude of any physical quantity
depends on the method of measurement
does not depend on the method of measurement
is more in SI system than in CGS system
directly proportional to the fundamental units of mass, length and time
Question number: 10
Out of three measurements l = 0.7 m; l = 0.70 m and l = 0.700 m, the last one is most accurate.
In every measurement, only the last significant digit is not accurately known.
|a.||Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ|
|b.||Ꭺ is false but Ꭱ is true|
|c.||Both Ꭺ and Ꭱ are false|
|d.||Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ|