In general knowledge terms, which wave requires a material medium to travel?
✅ B. Sound wave
Sound is a mechanical wave and requires a medium. Read more
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In general knowledge terms, what happens to the resistance of a metallic conductor generally when temperature increases?
✅ C. It increases
For typical metals, electrical resistance increases as temperature rises. Read more
In general knowledge terms, which simple machine is a rigid bar pivoted about a fixed point?
✅ D. Lever
A lever is a rigid bar that rotates around a fulcrum. Read more
In general knowledge terms, which quantity is measured in joules?
✅ A. Energy
The joule is the SI unit of energy and work. Read more
In general knowledge terms, what is momentum equal to?
✅ D. Mass × velocity
Linear momentum is p = mv. Read more
In general knowledge terms, which phenomenon is the bouncing back of light from a surface?
✅ C. Reflection
Reflection is the return of light from a surface. Read more
In general knowledge terms, which phenomenon explains the bending of light when it passes between media?
✅ A. Refraction
Refraction is the change in direction of light due to a change in speed between media. Read more
In general knowledge terms, what is the unit of magnetic flux density?
✅ A. Tesla
Magnetic flux density is measured in teslas. Read more
In general knowledge terms, what is frequency measured in?
✅ A. Hertz
Frequency is measured in hertz. Read more
In general knowledge terms, which form of energy is stored in a stretched spring?
✅ D. Elastic potential energy
A stretched spring stores elastic potential energy. Read more