Question

Choose True or False for all statements

1. When the Celsius temperature doubles, the Fahrenheit temperature doubles.
2. When heat is added to a system, the temperature must rise.
3. In a bimetallic strip of aluminum and brass which curls when heated, the aluminum is on the inside of the curve.
4. An iron plate has a hole cut in its center. When the plate is heated, the hole gets smaller.
5.When the pendulum of a grandfather clock is heated, the clock runs more slowly.
6.Cold objects do not radiate heat energy.

Answer 1

Step-by-step explanation:

1 . When the Celsius temperature doubles, the Fahrenheit temperature doubles - FALSE

A change of temperature from 300 F to 600 F changes celsius degree from 148 to 315 °C

2. When heat is added to a system, the temperature must rise.

- FALSE

When we add heat to a system of mixture of ice and water , temperature does not rise until whole of ice melts.

3. In a bimetallic strip of aluminum and brass which curls when heated, the aluminum is on the inside of the curve

- FALSE

Coefficient of linear thermal expansion of aluminium is more so it will be on the outer side.

4. An iron plate has a hole cut in its center. When the plate is heated, the hole gets smaller.

- FALSE

hole will be bigger. There will be photogenic expansion .

5.When the pendulum of a grandfather clock is heated, the clock runs more slowly.

TRUE

Time period is directly proportional to square root of length of pendulum.

when time period increases , clock becomes slow.

6.Cold objects do not radiate heat energy

- FALSE

Object radiates energy at all temperature .

6 .