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Assertion and Reason : Read the assertion and reason carefully to mark the correct option out of the option given below Assertion : Identical spring of steel and copper are equally stretched more will be done on the steel spring. Reason : Steel is more elastic than copper.
$ = { { Ft \over A} \over { x \over y } } $
A wire is stretched to double the length which of the following is false in this context ?
Which is the dimensional formula for modulus of rigidity ?
The modulus of rigidity, also known as shear modulus, is the measure of an object's ability to resist deformation under shear stress. Its formula is given by the ratio of shear stress to shear strain. The dimensional formula for shear stress is the same as pressure, which is $M^1 L^{-1} T^{-2}$.
Thus, the correct dimensional formula for modulus of rigidity is $M^1 L^{-1} T^{-2}$. Hence, the correct answer is o2.
When more than 20 kg mass is tied to the end of wire it breaks what is maximum mass that can be tied to the end of a wire of same material with half the radius ?
$ Y = { { W \over A} \over { Al \over l} } $
When 100 N tensile force is applied to a rod of $ 10^{-6} m^2 $ cross-sectional area, its length increases by 1% so young's modulus of material is..........
A rubber ball when taken to the bottom of a 100 mdeep take decrease in volume by 1% Hence, the bulk modulus of rubber is............$ ( g = 10 m/s^2 ) $
Bulk modulus (K) is given by the formula: $$ K = rac{Pressure}{ rac{ ext{Δ}V}{V}} $$ Pressure (P) at a depth h is given by: $$ P = ho g h $$ Assuming the density of water ( ext{Ï}) to be $1000 ext{ kg/m}^3$: $$ P = 1000 ext{ kg/m}^3 imes 10 ext{ m/s}^2 imes 100 ext{ m} = 10^6 ext{ Pa} $$ The fractional change in volume is 1%, or 0.01. Hence, $$ K = rac{10^6 ext{ Pa}}{0.01} = 10^8 ext{ Pa} $$ Therefore, the correct answer is $10^8 ext{ Pa}$, which corresponds to o2.
Young's modulus of a rigid body is
Young's modulus (Y) is a measure of the stiffness of a material. For a perfectly rigid body, there is no deformation regardless of the applied force, meaning the strain is zero. Since Young's modulus is calculated as: $$ Y = rac{Stress}{Strain} $$ If strain is zero, the modulus tends to infinity. Therefore, the correct answer is $$ ext{∞} $$ which corresponds to o3.
Pressure on an object increases from $ 1.01 \times 10^ 5 Pa to 1.165 \times 10^ 5 Pa $. He volume decrease by 10% at constant temperature. Bulk modulus of material is........
Cross-sectional area if wire of length Lis A. Young's modulus of material is Y. If this wire acts as a spring what is the value of force constant ?
$ Y = { F \over A} { L \over \triangle L } $
Writing on black board with a piece of chalk is possible by the property of
Writing on a blackboard with a piece of chalk is possible due to adhesive forces. Adhesive forces are the attractive forces between unlike substances, such as chalk and the blackboard. These forces enable the chalk particles to stick to the surface of the blackboard, allowing writing to occur. Therefore, option o1 is correct.
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The bank mixes NEET previous year questions (PYQs) with practice questions, each tagged with its exam appearances where applicable.