Overview
see the file i uploud it to answer the questions
1- Which material has the highest heat capacity?
- Metals
- Polymers
- Ceramics
- Any of the above
2-The number of electrons is equal to the number of holes in extrinsic conduction.
- True
- False
3-The incident light on a solid is?
- Reflected
- Refracted
- Absorbed
- All of the above
4-The index of refraction relates the speed of light in water to the speed of light in a material.
- True
- False
5-A soft magnet shows larger coercivity than a hard magnet
- True
- False
6-The stress observed in a material due to uneven cooling/heating and due to mismatch in thermal expansion are.
-Tensile Stress
-Thermal Stress
- Compressive Stress
- Hydrostatic Stress
7-The resistivity of metals increases with.
- Imperfections
- Temperature
- Cold working
- All of the above
8-The number of electrons is equal to the number of holes in extrinsic conduction.
- True
- False
9-As the applied magnetic field (H) increases, the magnetic moment aligns with H.
- True
- False
10-Which material has the highest coefficient of thermal expansion?
- Metals
- Polymers
- Ceramics
- Any of the above
11-Thermal conductivity of metals is greater than ceramics and polymers.
-True
-False
12-Which material has the highest coefficient of thermal expansion?
- Metals
- Polymers
- Ceramics
- Any of the above
13-The index of refraction relates the speed of light in water to the speed of light in a material.
- True
- False