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Physics-

General

Easy

Question

Three rods of the same dimensions have thermal conductivities $3 k comma 2 k a n d k$ . They are arranged as shown, with their ends at $100 to the power of ring operator end exponent C comma 50 to the power of ring operator end exponent C a n d 0 to the power of ring operator end exponent C$ . The temperature of their junction is: -

$75^{\circ} C$
$\frac{200^{\circ}}{3} C$
$40^{\circ} C$
${\frac{100}{3}}^{\circ} C$

The correct answer is: $fraction numerator 200 to the power of ring operator end exponent over denominator 3 end fraction C$

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At $20 to the power of ring operator end exponent C$ a liquid is filled upto 10 cm height in a container of glass of length 20 cm and cross-sectional area 100 cm2 Scale is marked on the surface of container. This scale gives correct reading at $20 to the power of ring operator end exponent C$ . $text Given end text gamma subscript L end subscript equals 5 cross times 10 to the power of negative 5 end exponent k to the power of negative 1 end exponent comma alpha subscript g end subscript equals 1 cross times 10 to the power of negative 5 end exponent$ °C^–1. The reading of scale at 40°C is-

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parallel

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Physics-General

One mole of a monoatomic ideal gas occupies two chambers of a cylinder partitioned by means of a movable piston. The walls of the cylinder as well as the piston are thermal insulators. Initially equal amounts of gas fill both the chambers at $open parentheses P subscript 0 end subscript comma V subscript 0 end subscript comma T subscript 0 end subscript close parentheses$ A coil is burnt in the left chamber which absorbs heat and expands, pushing the piston to the right. The gas on the right chamber is compressed until to pressure becomes 32 $P subscript 0 end subscript$ .The work done on the gas in the right chamber is

One mole of a monoatomic ideal gas occupies two chambers of a cylinder partitioned by means of a movable piston. The walls of the cylinder as well as the piston are thermal insulators. Initially equal amounts of gas fill both the chambers at $open parentheses P subscript 0 end subscript comma V subscript 0 end subscript comma T subscript 0 end subscript close parentheses$ A coil is burnt in the left chamber which absorbs heat and expands, pushing the piston to the right. The gas on the right chamber is compressed until to pressure becomes 32 $P subscript 0 end subscript$ .The work done on the gas in the right chamber is

Physics-General

One mole of a monoatomic ideal gas occupies two chambers of a cylinder partitioned by means of a movable piston. The walls of the cylinder as well as the piston are thermal insulators. Initially equal amounts of gas fill both the chambers at $open parentheses P subscript 0 end subscript comma V subscript 0 end subscript comma T subscript 0 end subscript close parentheses$ A coil is burnt in the left chamber which absorbs heat and expands, pushing the piston to the right. The gas on the right chamber is compressed until to pressure becomes 32 $P subscript 0 end subscript$ . The final volume of left chamber is

One mole of a monoatomic ideal gas occupies two chambers of a cylinder partitioned by means of a movable piston. The walls of the cylinder as well as the piston are thermal insulators. Initially equal amounts of gas fill both the chambers at $open parentheses P subscript 0 end subscript comma V subscript 0 end subscript comma T subscript 0 end subscript close parentheses$ A coil is burnt in the left chamber which absorbs heat and expands, pushing the piston to the right. The gas on the right chamber is compressed until to pressure becomes 32 $P subscript 0 end subscript$ . The final volume of left chamber is

Physics-General

parallel

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