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%

Edit

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

Edit

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

Edit

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

Edit

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

Edit