Explore topic-wise MCQs in Physics.

This section includes 5 Mcqs, each offering curated multiple-choice questions to sharpen your Physics knowledge and support exam preparation. Choose a topic below to get started.

1.

Which error is removed when the known and unknown resistances are interchanged in a Meter Bridge?

A. Percentage error
B. Measurement error
C. End error
D. Index error
Answer» D. Index error
Discussion
2.

The sensitivity of the meter bridge is at the peak when all resistors have the same order.

A. True
B. False
Answer» B. False
Discussion
3.

A resistance of 5 ohms is connected across the gap of a Meter Bridge and an unknown resistance, greater than 5 ohms, is connected across the other gap. When these resistances are interchanged, the balance point shifts by 50 cm. Neglecting any correction, what is the unknown resistance? The length of the wire is 150 cm.

A. 3 ohms
B. 10 ohms
C. 7 ohms
D. 5 ohms
Answer» C. 7 ohms
Discussion
4.

What is the effect on null deflection of galvanometer, when the radius of the wire is tripled?

A. No change
B. Becomes half
C. Reduces by \(\frac {1}{3}\)
D. Thrice the original value
Answer» B. Becomes half
Discussion
5.

Two resistances are connected in two gaps of Meter Bridge. The balance is 20cm from the zero end. A resistance of 15 ohms is connected in series with the smaller of the two. The null point shifts to 40cm. What is the value of the bigger resistance?

A. 9
B. 18
C. 27
D. 36
Answer» E.
Discussion