Laser in Physics Quiz Questions and Answers PDF - 93

MCQ 461: For an electron to be confined to a nucleus, its speed relative to the speed of light would have to be

1. equal
2. less
3. greater
4. equal to infinity

MCQ 462: In ^e/_m experiment, path of electron is made visible by filling

1. H₂ at high pressure
2. N₂ at high pressure
3. H₂ at low pressure
4. O₂ at low pressure

MCQ 463: If the charged particle of 2e falls at the potential difference of 6 V, then the energy required to fall will be

1. 19 J
2. 19.2 J
3. 19 × 10^-19 J
4. 19.2 × 10^-19 J

MCQ 464: Device known as low-resistance galvanometer is

1. ammeter
2. ohmmeter
3. voltmeter
4. odometer

MCQ 465: Hydroelectric energy's original source is

1. sun
2. moon
3. stars
4. fluid