Explore topic-wise MCQs in Physics Questions and Answers.

This section includes 2 Mcqs, each offering curated multiple-choice questions to sharpen your Physics Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.

1.	A wire has a young’s modulus of 105N/m2, length 1m & radius 3mm. Assuming a uniform cross sectional area, find the radius of wire after it is under a force of 1N from both ends.
A.	2.58m
B.	2.30m
C.	3.54m
D.	2.24m
Answer» B. 2.30m

Discussion

2.	A wire with a radius of 5mm is hung freely from the ceiling. A load of 5N is applied to its free end. Find the elongation in the wire if its volume is 7.85*10-5m3 & young’s modulus is 1011N/m2.
A.	6.21*10-7m
B.	7.00*10-7m
C.	6.36*10-7m
D.	8.00*10-9m
Answer» D. 8.00*10-9m

Discussion

Explore topic-wise MCQs in Physics Questions and Answers.

A wire has a young’s modulus of 105N/m2, length 1m & radius 3mm. Assuming a uniform cross sectional area, find the radius of wire after it is under a force of 1N from both ends.

A wire with a radius of 5mm is hung freely from the ceiling. A load of 5N is applied to its free end. Find the elongation in the wire if its volume is 7.85*10-5m3 & young’s modulus is 1011N/m2.