Home
Class 12
PHYSICS
The wires A and B shown in Fig. are made...

The wires `A` and `B` shown in Fig. are made of the same material and have radii `r_(A)` and `r_(B)`, respectively. The block between them has a mass `m`. When the force `F` is `mg//3`, one of the wires breaks. Then

A

A will break before B if `r_(A) =r_(B)`

B

A will break before B if `r_(A) lt 2r_(s)`

C

Either A or B may break if `r_(A) =2r_(s)`

D

The lengths of A and B must be known to predict which wire will break.

Text Solution

Verified by Experts

The correct Answer is:
A, B, C
Promotional Banner

Topper's Solved these Questions

  • ELASTICITY AND THERMAL EXPANSION

    MOTION|Exercise Exercise - 2 (Level-II) (Section C - Youngs Modulus, Poissions Ratio)|2 Videos

  • ELASTICITY AND THERMAL EXPANSION

    MOTION|Exercise Exercise - 2 (Level-II) (Section D - Thermal Expansion (Solid , Liquids & Gas) & types, Applications (Ex Bimetallic strip etc))|2 Videos

  • ELASTICITY AND THERMAL EXPANSION

    MOTION|Exercise Exercise - 2 (Level-II) (Section A - Stress & types, Strain & types + Types of Modulus + Energy Problems + Graphs)|3 Videos

  • ELASTICITY

    MOTION|Exercise EXERCISE -3|60 Videos

  • Electrical Instrument

    MOTION|Exercise EXERCISE -3|16 Videos

Similar Questions

Explore conceptually related problems

The wires A and B shown in the figur, are made of the same material and have radii r_(A) and r_(B) . A block is mass m kg is find between them : If the force F is mg//3 , one of the wires breaks.

Two wires of same material and same length have radii r_1 and r_2 respectively. Compare their resistances.

A composite wire of length 2L is made by joining two different wires A and B having the same length, made of the same material but of different radii r and 2r respectively . The composite wire is vibrating at such a frequency, that the junction of the two wires form a node. If the number of antinodes in the wire A is p and that in the wire B is q, then the ratio p : q is

Two wires A and B are made of same material and are having same weights. The strain in A will be more when

Two wires of same material and length have the radii of their cross sections as r and 2r, respectively. The ratio of their resistances

Two rods A and B of the same material and length have radii r_(1) and r_(2) respective. When they are rigidly fixed at one end and twisted by the same torque applied at the other end, the ratio [("the angle of twist at the end of A")/("the angle of twist at the end of B")] equal to

Three wires P, Q and R of the same material and length have radii 0.1 cm, 0.2 cm and 0.3 cm respectively. Which wire has the highest value of Young's modulus of elasticity?

Two wires A and B of same length are made of same material . The figure represents the load F versus extension Deltax graph for the wires. Then