Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions)
A steel tape 1m long is correctly calibrated for a temperature of 27.0 °C. The length of a steel rod measured by this tape is found to be 63.0 cm on a hot day when the temperature is 45.0 C. What is the actual length of the steel rod on that day? What is the length of the same steel rod on a day when
01
Sep
A steel tape 1m long is correctly calibrated for a temperature of 27.0 °C. The length of a steel rod measured by this tape is found to be 63.0 cm on a hot day when the temperature is 45.0 C. What is the actual length of the steel rod on that day? What is the [...]
At room temperature (25C) the length of a steel rod is measured using a brass centimetre scale. The measured length is 20 cm. If the scale is calibrated to read accurately at temperature 0C, find the actual length of steel rod at room temperature.
01
Sep
At room temperature (25C) the length of a steel rod is measured using a brass centimetre scale. The measured length is 20 cm. If the scale is calibrated to read accurately at temperature 0C, find the actual length of steel rod at room temperature. At room temperature (25C) the length of a steel rod is [...]
A composite rod is made by joining a copper rod, end to end, with a second rod of different material but of the same area of cross section. At 25C, the composite rod is 1m long and the copper rod is 30cm long. At 125C the length of the composte rod increases by 1.91mm. When the composite rod is prevented from expanding by bolding it between two rigid walls, it is found that the constituent reds have remained unchanged in length in split of rise of temperature. Find young’s modulus
01
Sep
A composite rod is made by joining a copper rod, end to end, with a second rod of different material but of the same area of cross section. At 25C, the composite rod is 1m long and the copper rod is 30cm long. At 125C the length of the composte rod increases by 1.91mm. When [...]
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A composite rod is made by joining a copper rod ,
A steel ball initially at a pressure of 10^5Pa is heated from 20C to 120C keeping its volume constant. Find the pressure inside the ball. Coefficient of linear expansion of steel ,
end to end ,
with a second rod of different material but of the same area of cross section. At 25C ,
A steel ball initially at a pressure of 10^5Pa is heated from 20C to 120C keeping its volume constant. Find the pressure inside the ball. Coefficient of linear expansion of steel
01
Sep
A steel ball initially at a pressure of 10^5Pa is heated from 20C to 120C keeping its volume constant. Find the pressure inside the ball. Coefficient of linear expansion of steel A steel ball initially at a pressure of 10^5Pa is heated from 20C to 120C keeping its volume constant. Find the pressure inside the [...]
Two rods of different metals having the same area of cross section A are placed between the two massive walls as shown is Fig. The first rod has a length l1, coefficient of linear expansion α1 and Young’s modulus Y1. The corresponding quantities for second rod are l2,α2 and Y2. The temperature of both the rods is now raised by t∘C.
01
Sep
Two rods of different metals having the same area of cross section A are placed between the two massive walls as shown is Fig. The first rod has a length l1, coefficient of linear expansion α1 and Young’s modulus Y1. The corresponding quantities for second rod are l2,α2 and Y2. The temperature of both the [...]
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coefficient of linear expansion α1 and Young's modulus Y1. The corresponding quantities for second rod are l2 ,
Two rods of different metals having the same area of cross section A are placed between the two massive walls as shown is Fig. The first rod has a length l1 ,
α2 and Y2. The temperature of both the rods is now raised by t∘C. ,
A rod of length 2 m is at a temperature of 20∘ C. find the free expansion of the rod, if the temperature is increased to 50∘C, then find stress produced when the rod is (i) fully prevented to expand, (ii) permitted to expand by 0.4mm. Y=2×10^11N/m2,α=15×10^−6/∘C.
01
Sep
A rod of length 2 m is at a temperature of 20∘ C. find the free expansion of the rod, if the temperature is increased to 50∘C, then find stress produced when the rod is (i) fully prevented to expand, (ii) permitted to expand by 0.4mm. Y=2×10^11N/m2,α=15×10^−6/∘C. (ii) permitted to expand by 0.4mm. Y=2×10^11N/m2 A [...]
A brass wire 1.8m long at 27∘C is held taut with little tension between two rigid supports. If the wire cooled to a temperature of −39∘C, what is the tension developed in the wire, if its diameter is 2.0mm? Coefficient of linear expansion of brass
01
Sep
A brass wire 1.8m long at 27∘C is held taut with little tension between two rigid supports. If the wire cooled to a temperature of −39∘C, what is the tension developed in the wire, if its diameter is 2.0mm? Coefficient of linear expansion of brass A brass wire 1.8m long at 27∘C is held taut [...]
A pendulum clock loses 12s a day if the temperature is 40o C and gains 4s a day if the temperature is 20oC. The temperature at which the clock will show correct time, and the co-efficient of linear expansion (
01
Sep
A pendulum clock loses 12s a day if the temperature is 40o C and gains 4s a day if the temperature is 20oC. The temperature at which the clock will show correct time, and the co-efficient of linear expansion ( A pendulum clock loses 12s a day if the temperature is 40o C and gains [...]
A clock with a brass pendulum shaft keeps correct time at a certain temperature, How closely must the temperature be controlled if the clock is not to gain or lose more than 1s a day
01
Sep
A clock with a brass pendulum shaft keeps correct time at a certain temperature, How closely must the temperature be controlled if the clock is not to gain or lose more than 1s a day A clock with a brass pendulum shaft keeps correct time at a certain temperature How closely must the temperature be [...]
The figure shows a rectangular plate of dimension l*b from which two circular holes of radii R1 ad R2 (R1 > R2) have been cut. The distance between the two holes is
01
Sep
The figure shows a rectangular plate of dimension l*b from which two circular holes of radii R1 ad R2 (R1 > R2) have been cut. The distance between the two holes is The figure shows a rectangular plate of dimension l*b from which two circular holes of radii R1 ad R2 (R1 > R2) have [...]