NEET (2024 Updated)-National Eligibility cum Entrance Test (Medical) Physics: Questions 506 - 509 of 5119
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Question 506
Question MCQ▾
Which is correct statements?
(1) The Wheatstone bridge is most sensitive when all the four resistances are of the same order
(2) Kirchhoff՚s first law (for currents meeting at a junction in an electric circuit) expresses the conservation of charge.
(3) The rheostat can be used as a potential divider.
(4) In a balanced Wheatstone bridge, interchanging the positions of galvanometer and cell affects the balance of the bridge.
Select the correct answers and mark it according to the following codes:
Choices
Choice (4) | Response | |
---|---|---|
a. | 1 and 3 | |
b. | 1,2 and 3 | |
c. | 1 and 2 | |
d. | 2 and 4 |
Question 507
Question MCQ▾
The equivalent resistance of the following infinite network of resistance is
Choices
Choice (4) | Response | |
---|---|---|
a. | More than 4 Ω but less than 12 Ω | |
b. | 4 Ω | |
c. | 12 Ω | |
d. | Less than 4 Ω |
Question 508
Question MCQ▾
For the post office box arrangement to determine the value of unknown resistance the unknown resistance should be connected between
Choices
Choice (4) | Response | |
---|---|---|
a. | A and D | |
b. | C and D | |
c. | B and C | |
d. | B1 and C1 |
Question 509
Question MCQ▾
Resistance in the two gaps of a meter bridge are 10 ohm and 30 ohm respectively. If the resistances are interchanged the balance point shifts by
Choices
Choice (4) | Response | |
---|---|---|
a. | 50 cm | |
b. | 25 cm | |
c. | 66.67 cm | |
d. | 33.3 cm |