Processing math: 100%

The ratio of lengths of two rods A and B of the same material is 1:2 and the ratio of their radii is 2:1. The ratio of modulus of rigidity of A and B will be:

1. 4:1 2. 16:1
3. 8:1 4. 1:1

Subtopic:  Stress - Strain |
 56%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

When a spiral spring is stretched by suspending a load on it, the strain produced is called:

1. Shearing
2. Longitudinal
3. Volume       
4. shearing and longitudinal
Subtopic:  Shear and bulk modulus |
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
Links
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

The Young's modulus of the material of a wire is 6×1012 N/m2 and there is no transverse strain in it, then its modulus of rigidity will be:

1. 3×1012 N/m2
2. 2×1012 N/m2
3. 1012 N/m2
4. None of the above

Subtopic:  Elasticity |
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints

advertisementadvertisement

Modulus of rigidity of a liquid:

1. Non zero constant

2. Infinite

3. Zero

4. Can not be predicted

Subtopic:  Shear and bulk modulus |
 63%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
Links
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

A cube of aluminium of sides 0.1 m is subjected to a shearing force of 100 N. The top face of the cube is displaced through 0.02 cm with respect to the bottom face. The shearing strain would be:
1. 0.02                                   
2. 0.1
3. 0.005                               
4. 0.002

Subtopic:  Stress - Strain |
 72%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

The upper end of a wire of radius 4 mm and length 100 cm is clamped and its other end is twisted through an angle of 30°. Then angle of shear is

1. 12°                                     

2. 0.12°

3. 1.2°                                     

4. 0.012°

Subtopic:  Stress - Strain |
 68%
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints

advertisementadvertisement

A rod of length l and radius r is joined to a rod of length l/2 and radius r/2 of same material. The free end of small rod is fixed to a rigid base and the free end of larger rod is given a twist of θ, the twist angle at the joint will be 

1.  θ/4                         
2. θ/2
3. 5θ/6                       
4. 8θ/9

Subtopic:  Stress - Strain |
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints

Shearing stress causes a change in-

1.   Length                              

2.   Breadth

3.   Shape                               

4.   Volume

Subtopic:  Stress - Strain |
 76%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

To break a wire, a force of 106N/m2 is required. If the density of the material is 3×103 kg/m3, then the length of the wire which will break by its own weight will be -

1. 34 m                             
2. 30 m
3. 300 m                          
4. 3 m

Subtopic:  Stress - Strain |
 54%
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints

advertisementadvertisement

The strain-stress curves of three wires of different materials are shown in the figure. P, Q and R are the elastic limits of the wires. The figure shows that:
           

1. Elasticity of wire P is maximum.
2. Elasticity of wire Q is maximum.
3. Tensile strength of R is maximum.
4. None of the above is true.
Subtopic:  Stress - Strain Curve |
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
Links
To view explanation, please take trial in the course.
NEET 2025 - Target Batch