Question

4. Solye the following examples.
a. What must be the temperature in
Fahrenheit so that it will be twice its
value in Celsius?
(Ans. 320 °F)
b. A bridge is made from 20 m long iron
rods. At temperature 18 °C, the distance
between two rods is 0.4 cm. Up to what
temperature will the bridge be in good
shape?
(Ans. 35.4 °C)
c. At 15 °C the height of Eifel tower is 324
m. If it is made of iron, what will be the
increase in length in cm, at 30 °C?
(Ans. 5.6 cm)
d. Two substances A and B have specific
heats c and 2 c respectively. If A and B
are given Q and 4Q amounts of heat
respectively, the change in their
temperatures is the same. If the mass of
A is m, what is the mass of B?
(Ans. 2 m)
e. When a substance having mass 3 kg
receives 600 cal of heat, its temperature
increases by 10 °C. What is the specific
heat of the substance?
(Ans.0.0033 cal /(gm "C))​

Answer 1

4. Solye the following examples.

a. What must be the temperature in

Fahrenheit so that it will be twice its

value in Celsius?

(Ans. 320 °F)

b. A bridge is made from 20 m long iron

rods. At temperature 18 °C, the distance

between two rods is 0.4 cm. Up to what

temperature will the bridge be in good

shape?

(Ans. 35.4 °C)

c. At 15 °C the height of Eifel tower is 324

m. If it is made of iron, what will be the

increase in length in cm, at 30 °C?

(Ans. 5.6 cm)

d. Two substances A and B have specific

heats c and 2 c respectively. If A and B

are given Q and 4Q amounts of heat

respectively, the change in their

temperatures is the same. If the mass of

A is m, what is the mass of B?

(Ans. 2 m)

e. When a substance having mass 3 kg

receives 600 cal of heat, its temperature

increases by 10 °C. What is the specific

heat of the substance?

(Ans.0.0033 cal /(gm "C))

Answer 2

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Explanation:

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