Physics and Measurement [NEET (2024 Updated)-National Eligibility cum Entrance Test (Medical) Physics]: Questions 1 - 5 of 278
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Question 1
Question MCQ▾
The resistance R = V/i where V = 100 + or - 5 volts and i = 10 + 0.2 amperes. What is the total error in R?
Choices
Choice (4) | Response | |
---|---|---|
a. | 5% | |
b. | 5.2% | |
c. | % | |
d. | 7% |
Question 2
Question MCQ▾
If the length of rod A is 3.25 + 0.01 cm and that of B is 4.19 + 0.01 cm then the rod B is longer than rod A by
Choices
Choice (4) | Response | |
---|---|---|
a. | 0.94 + 0.02 cm | |
b. | 0.94 + 0.01 cm | |
c. | 0.94 + 0.00 cm | |
d. | All of the above |
Question 3
Question MCQ▾
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?
Choices
Choice (4) | Response | |
---|---|---|
a. | x and A | |
b. | x and B | |
c. | C and z-1 | |
d. | y and B/A |
Question 4
Question MCQ▾
The magnitude of any physical quantity
Choices
Choice (4) | Response | |
---|---|---|
a. | depends on the method of measurement | |
b. | is more in SI system than in CGS system | |
c. | does not depend on the method of measurement | |
d. | directly proportional to the fundamental units of mass, length and time |
Question 5
Question Assertion-Reason▾
Assertion(Ꭺ)
Out of three measurements l = 0.7 m; l = 0.70 m and l = 0.700 m, the last one is most accurate.
Reason(Ꭱ)
In every measurement, only the last significant digit is not accurately known.
Choices
Choice (4) | Response | |
---|---|---|
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 true and Ꭱ is the correct explanation of Ꭺ | |
d. | Both Ꭺ and Ꭱ are false |