Physics Test 23
Total Questions: 27
A ) Radiation
B ) Conduction ✅
C ) Convection
D ) Absorption
A ) Becomes double
B ) Remain same
C ) Become helf ✅
D ) Becomes ¼
A ) Free electron ✅
B ) Big size of their molecules
C ) Small size of molecules
D ) Rapid vibration of atom
A ) Molecular collision
B ) Conduction
C ) Convection ✅
D ) Radiation
A ) Random motian of molecules
B ) Downward movement of molecules
C ) Upward movement of molecules ✅
D ) Free movement of molecules
A ) Lower the height of ceiling
B ) Keep the roof clean
C ) Cool the room
D ) Insulate the ceiling ✅
Explanation:
A secondary ceiling hung below the main ceiling
📚 Explanation for Competitive Exams: A false ceiling (also called a dropped ceiling , suspended ceiling , or secondary ceiling ) is a secondary structure installed below the main (true) ceiling . It is commonly used to:🟢Improve aesthetics 🟢Provide soundproofing 🟢Hide wiring, ducts, or pipes 🟢Enhance lighting (e.g., LED, ambient lighting) 🟢Help with thermal insulation.
A ) Conduction only
B ) Radiation only
C ) Convection and radiation
D ) Convection only ✅
A ) Sea to land during night
B ) Sea to land during day
C ) Land to sea during night ✅
D ) Land to Sea during day
A ) A shining silvered surface
B ) A dull black surface ✅
C ) A wite surface
D ) A green coloured surface
A ) 245
B ) 105
C ) 400
D ) 430
A ) Radiation
B ) Conduction ✅
C ) Convection
D ) Absorption
A ) Conduction only
B ) Radiation only
C ) Conversation only
D ) Both a and b
A ) Two
B ) Four ✅
C ) Six
D ) Eight
A ) Radiation
B ) Conduction
C ) Convection ✅
D ) Absorption
A ) Remain same
B ) Becomes half
C ) Becomes one fourth
D ) Becomes double ✅
A ) CO2
B ) H2
C ) N2
D ) NH3 ✅
A ) Conduction
B ) Molecular collision
C ) Convection ✅
D ) Absorption
A ) 0.08W-¹ K-¹
B ) 1.7 W-¹ K-¹
C ) 0.2 W-¹ K-¹
D ) 0.59 W-¹ K-¹
A ) Conduction
B ) Convection ✅
C ) Radiation
D ) Absorption
A ) A shining silvered surface
B ) A dull black surface ✅
C ) A white surface
D ) A green coloured surface
A ) Free election ✅
B ) Big size of their molecules
C ) Small size of their molecules
D ) Rapid vibration of their atoms
A ) Wool ✅
B ) Copper
C ) Gold
D ) Iron
A ) Lower the height of ceiling
B ) Keep the roof clean
C ) Cool the room
D ) Insulate the ceiling ✅
Explanation:
A secondary ceiling hung below the main ceiling
📚 Explanation for Competitive Exams: A false ceiling (also called a dropped ceiling , suspended ceiling , or secondary ceiling ) is a secondary structure installed below the main (true) ceiling . It is commonly used to:🟢Improve aesthetics 🟢Provide soundproofing 🟢Hide wiring, ducts, or pipes 🟢Enhance lighting (e.g., LED, ambient lighting) 🟢Help with thermal insulation.
A ) Copper
B ) Aluminium
C ) Water ✅
D ) Iron
A ) Eagles
B ) Hawk
C ) Vultures
D ) All of these
A ) White surface ✅
B ) Black surface
C ) Coloured surface
D ) Silver surface
A ) Dull black surface
B ) Coloured surface
C ) White surface
D ) Shining silvered surface ✅