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Recent questions tagged physics
Questions
The potential energy U between two molecules as a function of distance r between them has been shown.The two molecules are
jeemain
physics
class11
ch9
ch10
properties-of-solids-and-liquids
difficult
asked
May 8, 2014
by
sreemathi.v
1
answer
The rods A and B are heated.If $\alpha_1 : \alpha_2=5 : 7$,the thermal stresses develpoed on the two rods are equal if $Y_1 : Y_2$ is
jeemain
physics
class11
ch9
ch10
properties-of-solids-and-liquids
difficult
asked
May 8, 2014
by
sreemathi.v
1
answer
A golden ring of radius 0.5cm and cross section area $2mm^2$ is shifted to a wooden of disk of radius 8cm.If young modulus is $3\times 10^{10}N/m^2$,what is force along its length?
jeemain
physics
class11
ch9
ch10
properties-of-solids-and-liquids
difficult
asked
May 8, 2014
by
sreemathi.v
1
answer
Two wires A and B of same material have radii in the ratio 4 : 1 and length on the ratio 2 : 1.The forces required to produce same change in length are in the ratio
jeemain
physics
class11
ch9
ch10
properties-of-solids-and-liquids
medium
asked
May 8, 2014
by
sreemathi.v
1
answer
A long spring is stretched by 3cm and its potential energy is U.If spring is stretched by 12cm,its potential energy will be
jeemain
physics
class11
ch9
ch10
properties-of-solids-and-liquids
difficult
asked
May 8, 2014
by
sreemathi.v
1
answer
2 wires of equal length are suspended.$Y_1=2\times 10^{11}N/m^2$ and $Y_2=3\times 10^{11}N/m^2$.Find equivalent young's modulus of combination,$Y$
jeemain
physics
class11
ch9
ch10
properties-of-solids-and-liquids
difficult
asked
May 8, 2014
by
sreemathi.v
1
answer
A steel wire 5mm in diameter is fixed between 2 clamps at $30^{\large\circ}C$.The temperature is increased to $30^{\large\circ}C$.Find the tension at $50^{\large\circ}C$ if linear expansion of steel is $11\times 10^{-6}/^{\large\circ}C$ and $Y_{steel}=2.1\times 10^{11}N/m^2$
jeemain
physics
class11
ch9
ch10
properties-of-solids-and-liquids
difficult
asked
May 8, 2014
by
sreemathi.v
1
answer
A rubber catapult has a cross sectional area $2mm^2$ and total unstretched length 15cm.It is stretched to 18cm and then released to project a missile of 3g.Taking young modulus $8\times 10^8N/m^2$ find velocity of projection?
jeemain
physics
class11
ch9
ch10
properties-of-solids-and-liquids
difficult
asked
May 8, 2014
by
sreemathi.v
1
answer
A lift is tied with four iron wires and its mass is 1500Kg.If maximum acceleration of lift is $2m/s^2$ and maximum safe stress is $2\times 10^8N/m^2$ find the minimum diameter of the wire $g=10m/s^2$
jeemain
physics
class11
ch9
ch10
properties-of-solids-and-liquids
difficult
asked
May 8, 2014
by
sreemathi.v
1
answer
Find the density of material under a pressure $3\times 10^8N/m^2$ .Given the density of material $800Kg/m^3$.Bulk modulus of material $9\times 10^9N/m^2$.
jeemain
physics
class11
ch9
ch10
properties-of-solids-and-liquids
difficult
asked
May 8, 2014
by
sreemathi.v
1
answer
A solid sphere of radius 2cm of bulk modulus $2\times 10^6N/m^2$ is surrounded by a liquid in cylindrical container.A massless piston of area $100cm^2$ floats on the surface of the liquid.When a mass 30Kg is placed on piston to compress the liquid what is fractional change in the radius of sphere
jeemain
physics
class11
ch9
ch10
properties-of-solids-and-liquids
difficult
asked
May 8, 2014
by
sreemathi.v
1
answer
When the weight on a string is changed from 4Kg to 10Kg,the elongation changes from 0.3mm to 0.7mm,how much work done during this extension of the string?($g=10m/s^2$)
jeemain
physics
class11
ch9
ch10
properties-of-solids-and-liquids
difficult
asked
May 8, 2014
by
sreemathi.v
1
answer
What is tension in the wire of radius r and length 2l in the given situation if young's modulus is $Y$.
jeemain
physics
class11
ch9
ch10
properties-of-solids-and-liquids
difficult
asked
May 8, 2014
by
sreemathi.v
1
answer
A wire of 4m in length suspended vertically stretches by 1mm when mass of 25Kg is attached to the lower end.What is the elastic potential energy gained by the wire?$g=10m/s^2$
jeemain
physics
class11
ch9
ch10
properties-of-solids-and-liquids
medium
asked
May 8, 2014
by
sreemathi.v
1
answer
How much energy stored will increase in a steel wire of 5m and $2mm^2$ cross sectional area when force on it increases to 300N from 50N?($Y_{Steel}=2\times 10^{11}N/m^2$)
jeemain
physics
class11
ch9
ch10
properties-of-solids-and-liquids
medium
asked
May 8, 2014
by
sreemathi.v
1
answer
A brass rod of 2m is stretched by 1cm have crosssectional area $2cm^2$ .If a force of $10^5$N is applied on it.What is elastic potential energy density?
jeemain
physics
class11
ch9
ch10
properties-of-solids-and-liquids
medium
asked
May 8, 2014
by
sreemathi.v
1
answer
2 wires of radius in ratio 1 : 2 have young modulus in ratio 2 : 3.Equal force is applied on them ,what is the ratio of elastic potential energy
jeemain
physics
class11
ch9
ch10
properties-of-solids-and-liquids
difficult
asked
May 8, 2014
by
sreemathi.v
1
answer
Calculate the increase in energy of steel rod of 2m and crosssectional area $4cm^2$,when a 500N force is applied on it.$Y_{steel}=2\times 10^{11}N/m^2$
jeemain
physics
class11
ch9
ch10
properties-of-solids-and-liquids
difficult
asked
May 8, 2014
by
sreemathi.v
1
answer
If a force F displace 0.25cm with respect to bottom.What is F if modulus of rigidity is $5\times 10^5$.
jeemain
physics
class11
ch9
ch10
properties-of-solids-and-liquids
medium
asked
May 8, 2014
by
sreemathi.v
1
answer
Calculate the % change on volume is bulk modulus of water is $2\times 10^9N/m^2$ and average depth of sea is 4000m,take $g=10m/s^2$.
jeemain
physics
class11
ch9
ch10
properties-of-solids-and-liquids
easy
asked
May 8, 2014
by
sreemathi.v
1
answer
What is change in volume in cc of 5cc of water at surface taken to the bottom of the lake 50m deep,given volume elasticity is $20\times 10^3$atm
jeemain
physics
class11
ch9
ch10
properties-of-solids-and-liquids
easy
asked
May 8, 2014
by
sreemathi.v
1
answer
A sphere contracts in volume by 0.05% which taken to the bottom of sea 500m deep.Find bulk modulus of sphere.
jeemain
physics
class11
ch9
ch10
properties-of-solids-and-liquids
medium
asked
May 8, 2014
by
sreemathi.v
1
answer
Elastic and plastic regions are respectively
jeemain
physics
class11
ch9
ch10
properties-of-solids-and-liquids
easy
asked
May 8, 2014
by
sreemathi.v
1
answer
Two rods of equal length are in parallel with area in the ratio 3 : 4 and young modulus in the ratio 5 : 3.The ratio of force on the rods is
jeemain
physics
class11
ch9
ch10
properties-of-solids-and-liquids
medium
asked
May 8, 2014
by
sreemathi.v
1
answer
Two wires A and B of equal cross sectional area are in series,stretches equally is $Y_A=3\times 10^{11}$ and $Y_B=1.8\times 10^{11}$.What is ratio of their length?
jeemain
physics
class11
ch9
ch10
properties-of-solids-and-liquids
medium
asked
May 7, 2014
by
sreemathi.v
1
answer
Calculate elongation if $l_{steel}=2m$ and $l_{brass}=1.5m$,$a_{steel}=2mm^2$ and $a_{brass}=5mm^2$,$Y_{steel}=2\times 10^{11}N/m^2$ and $Y_{brass}=1\times 10^{11}N/m^2$.
jeemain
physics
class11
ch9
ch10
properties-of-solids-and-liquids
difficult
asked
May 7, 2014
by
sreemathi.v
1
answer
Two steel wire are hang from roof.Their length and radius are in the ratio 3 : 5 and 1 : 2 respectively.If the extension in first wire is 2mm,what is extension in other if force applied is in the ratio 2 : 3?
jeemain
physics
class11
ch9
ch10
properties-of-solids-and-liquids
difficult
asked
May 7, 2014
by
sreemathi.v
1
answer
A mass of 1kg is attached to the end of a rubber string 25cm long having radius 2mm,which is rotating in horizontal plane in a radius of 28cm with 50rpm.What is young modulus of string in $N/m^2$
jeemain
physics
class11
ch9
ch10
properties-of-solids-and-liquids
medium
asked
May 7, 2014
by
sreemathi.v
1
answer
A wire of r=1cm consist of 1m steel and 2m copper respectively.Total extension when a force applied is 1mm.Find the force is $Y_{cu}=1.1\times 10^{11}N/m^2,Y_{steel}=2\times 10^{11}N/m^2$.
jeemain
physics
class11
ch9
ch10
properties-of-solids-and-liquids
medium
asked
May 7, 2014
by
sreemathi.v
1
answer
2 wire of length 1 : 2 and area in the ratio 2 : 1 is applied with equal force stretch equally .Find the ratio of modulus of rigidity
jeemain
physics
class11
ch9
ch10
properties-of-solids-and-liquids
easy
asked
May 7, 2014
by
sreemathi.v
1
answer
The breaking stress of aluminium is $7\times 10^7N/m^2$.Find the maximum length of wire that can be hang with out breaking if density of aluminium is $3\times 10^3Kgm^{-3}$
jeemain
physics
class11
ch9
ch10
properties-of-solids-and-liquids
easy
asked
May 7, 2014
by
sreemathi.v
1
answer
Calculate change in volume percentage if we apply a pressure of 50atm on a material of Bulk modulus $2\times 10^{11}N/m^2$.
jeemain
physics
class11
ch9
ch10
properties-of-solids-and-liquids
easy
asked
May 7, 2014
by
sreemathi.v
1
answer
If $Y_{Steel}=2\times 10^{11}N/m^2$ ,what force must be applied to steel rod of $l=2m$ and $r=2mm$ to stretch it by 1mm
jeemain
physics
class11
ch9
ch10
properties-of-solids-and-liquids
easy
asked
May 7, 2014
by
sreemathi.v
1
answer
Among rubber and steel which is more elastic
jeemain
physics
class11
ch9
ch10
properties-of-solids-and-liquids
medium
asked
May 7, 2014
by
sreemathi.v
1
answer
Each side of a cube is decreased by 2% when a pressure of $3\times 10^6N/m^2$ is applied.What is bulk modulus of cube.
jeemain
physics
class11
ch9
ch10
properties-of-solids-and-liquids
easy
asked
May 7, 2014
by
sreemathi.v
1
answer
A 50KN force is applied on a table,the length of four legs of table is 2m each and of radius 5cm.If young modulus of material of table is $5\times 10^{10}N/m^2$.Find the decrease in length in a leg of table.
jeemain
physics
class11
ch9
ch10
properties-of-solids-and-liquids
easy
asked
May 7, 2014
by
sreemathi.v
1
answer
A steel rod of r=30mm and length 3m.A 50 KN force is applied along its length.Calculate the change in length is $Y=2\times 10^{11}N/m^2$
jeemain
physics
class11
ch9
ch10
properties-of-solids-and-liquids
easy
asked
May 7, 2014
by
sreemathi.v
1
answer
A steel wire of 8m in length is stretched by 1mm of cross sectional area $2mmm^2$ .If young modulus of steel is $2\times 10^{11}N/m^2$.What is elastic potential energy?
jeemain
physics
class11
ch9
ch10
properties-of-solids-and-liquids
easy
asked
May 7, 2014
by
sreemathi.v
1
answer
A 3cm cube has its upper face displaced by 0.1cm by a tangential force.If modulus of rigidity of material is $5\times 10^4N/m^2$.Find the force
jeemain
physics
class11
ch9
ch10
properties-of-solids-and-liquids
easy
asked
May 7, 2014
by
sreemathi.v
1
answer
If 5litre of ideal gas is compressed isothermally at 800mm Hg to 2 litre.Find its stress?
jeemain
physics
class11
ch9
ch10
properties-of-solids-and-liquids
medium
asked
May 7, 2014
by
sreemathi.v
1
answer
If we increases the pressure by 20atm on a sphere which is made up of material of bulkmodulus $5.2\times 10^{10}N/m^2$,what is change in volume percentage?
jeemain
physics
class11
ch9
ch10
properties-of-solids-and-liquids
easy
asked
May 7, 2014
by
sreemathi.v
1
answer
Two wires of same material have radius in the ratio 2 : 1 and length in the ratio 1 : 2.If equal force is applied on them then ratio of stress is
jeemain
physics
class11
ch9
ch10
properties-of-solids-and-liquids
easy
asked
May 7, 2014
by
sreemathi.v
1
answer
A steel wire of l=15m and r=1mm is stretched by a unknown force F.If young modulus of steel wire is $2.4\times 10^{11}N/m^2$ and change in length is $5\times 10^{-2}mm$
jeemain
physics
class11
ch9
ch10
properties-of-solids-and-liquids
easy
asked
May 7, 2014
by
sreemathi.v
1
answer
An n-p-n transistor has three leads A,B and C . Connecting B and C by moist fingers A, to the positive lead of an ammeter , and C to the negative lead of the ammeter , one finds large deflection . Then A,B and C refer respectively to :
jeemain
physics
2014
set-01
asked
May 5, 2014
by
yamini.v
0
answers
A transmitting antenna at the top of a tower has a height 32 m and the height of the receiving antenna is 50 m .What is the maximum distance between them for satisfactory communication in line of sight (LOS) mode ?
jeemain
physics
2014
set-01
asked
May 5, 2014
by
yamini.v
2
answers
If the binding energy of the electron in a hydrogen atom is 13.6 eV , the energy required to remove the electron from the first exited state of $\;Li^{++}\;$ is :
jeemain
physics
2014
set-01
asked
May 5, 2014
by
yamini.v
1
answer
For which of the following particles will it be most difficult to experimentally verify the de-Broglie relationship ?
jeemain
physics
2014
set-01
asked
May 3, 2014
by
yamini.v
1
answer
The focal lengths of objective lens and eye lens of a Gallelian Telescope are respectively 30 cm and 3.0 cm . Telescope produces virtual , erect image of an object situated far away from it at least distance of distinct vision from the eye lens . In this condition , the magnifying power of the Gallelian Telescope should be :
jeemain
physics
2014
set-01
asked
May 3, 2014
by
yamini.v
0
answers
A driver looking up through the water sees the outside world contained in a circular horizon .The refractive index of water is $\;\large\frac{4}{3}\;$ , and the diver's eyes are 15 cm below the surface water . Then the radius of the circle is :
jeemain
physics
2014
set-01
asked
May 3, 2014
by
yamini.v
0
answers
When the rms voltages $\;V_{L}\;,V_{C}\;$ and $\;V_{R}\;$ are measured respectively across the inductor L , the capacitor C and the resistor R in a series LCR circuit connected to an AC source ,it is found that the ratio $\;V_{L} : V_{C} : V_{R} = 1 : 2: 3\;$ . If the rms voltage of the AC source is 100 V , then $\;V_{R}\;$ is close to :
jeemain
physics
2014
set-01
asked
May 3, 2014
by
yamini.v
0
answers
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