### Physics Past Questions

4696

A train of mass 1600 kg attains a speed of 25 ms$$^{-1}$$ in 20 seconds. The power developed in the engine is?

• A. 2.5 KW
• B. 80 KW
• C. 25 KW
• D. 50 KW
JAMB 2022
4697

The main factor which affects the speed of sound wave is the?

• A. properties of the medium
• B. amplitude of the sound wave
• C. intensity of the sound wave
• D. loudness of the sound wave
JAMB 2022
4698

A semiconductor is formed by?

• A. co-ordinate bonds
• B. electrovalent bonds
• C. a substance free of bonds
• D. covalent bonds
JAMB 2022
4699

One of the following is a scalar quantity?

• A. weight
• B. momentum
• C. potential energy
• D. displacement
JAMB 2022
4700

The mercury column in the barometer at notational  atmospheric pressure has a height of?

• A. 0.76 cm at see level
• B. 760 cm at sea level
• C. 7.6 cm at sea level
• D. 76 cm at sea level
JAMB 2022