EASY
JEE Main
IMPORTANT
Earn 100

A wire can sustain the weight of 20 kg before breaking. If the wire is cut into two equal parts, each part can sustain a weight of

50% studentsanswered this correctly

Important Questions on Some Mechanical Properties of Matter

MEDIUM
JEE Main
IMPORTANT
CONCEPTS OF PHYSICS [VOLUME 1]>Chapter 14 - Some Mechanical Properties of Matter>OBJECTIVE I>Q 4
Two wires A and B are made of the same material. The wire A has a length l and diameter r while the wire B has a length 2l and diameter r2. If the two wires are stretched by the same force, the elongation in A divided by the elongation in B is,
EASY
JEE Main
IMPORTANT
CONCEPTS OF PHYSICS [VOLUME 1]>Chapter 14 - Some Mechanical Properties of Matter>OBJECTIVE I>Q 5
A wire elongates by 1.0 mm when a load W is hung from it. If this wire goes over a pulley with two weights, W each, hung at the two ends, the elongation of the wire will be,
EASY
JEE Main
IMPORTANT
CONCEPTS OF PHYSICS [VOLUME 1]>Chapter 14 - Some Mechanical Properties of Matter>OBJECTIVE I>Q 6
A heavy uniform rod is hanging vertically from a fixed support. It is stretched by its own weight. The diameter of the rod is,
EASY
JEE Main
IMPORTANT
CONCEPTS OF PHYSICS [VOLUME 1]>Chapter 14 - Some Mechanical Properties of Matter>OBJECTIVE I>Q 7
When a metal wire is stretched by a load, the fractional change in its volume ΔVV is proportional to,
MEDIUM
JEE Main
IMPORTANT
CONCEPTS OF PHYSICS [VOLUME 1]>Chapter 14 - Some Mechanical Properties of Matter>OBJECTIVE I>Q 8
The length of a metal wire is l1 when the tension in it is T1 and is l2 when the tension is T2. The natural length of the wire is,
MEDIUM
JEE Main
IMPORTANT
CONCEPTS OF PHYSICS [VOLUME 1]>Chapter 14 - Some Mechanical Properties of Matter>OBJECTIVE I>Q 9
A heavy mass is attached to a thin wire and is whirled in a vertical circle. The wire is most likely to break,
EASY
JEE Main
IMPORTANT
CONCEPTS OF PHYSICS [VOLUME 1]>Chapter 14 - Some Mechanical Properties of Matter>OBJECTIVE I>Q 10
When a metal wire elongates by hanging a load on it, the gravitational potential energy is decreased and
EASY
JEE Main
IMPORTANT
CONCEPTS OF PHYSICS [VOLUME 1]>Chapter 14 - Some Mechanical Properties of Matter>OBJECTIVE I>Q 11
By a surface of a liquid, we mean,