A magnet makes 40 oscillations per minute at a place having magnetic field intensity of 0.1 * 10 ^ - 5 * T At another place, it takes 2.5 sec to complete one vibration. The value of earth's horizontal field at that place is

Question:

A magnet makes 40 oscillations per minute at a place having magnetic field intensity of 0.1 * 10 ^{– 5} T At another place, it takes 2.5 sec to complete one vibration. The value of earth’s horizontal field at that place is

Options :

(a) 0.25 * 10 ^ - 6 T
(b) 0.36 * 10 ^ - 6 T
(c) 0.66 * 10 ^ - 8 T
(d) 1.2 * 10 ^ - 6 *T

Answer :

Ans :- (b) 0.36 * 10 ^ – 6 * T

Answer Steps :

Step 1:-

Step 2:-

Video Tutorial

In photoelectric effect, when certain metallic surface is illuminated with monochromatic light of wavelength ‘λ’, the stopping potential is ‘3V’. If the same surface is illuminated with light of wavelength ‘2λ’, the stopping potential is ‘V’. The threshold wavelength for this surface is : [MHT-CET 2022]

A photoelectric surface is illuminated successively by monochromatic light of wavelength ‘λ’ and ‘λ/2’. If the maximum kinetic energy of the emitted photoelectrons in the first case in one-third that in the second case, the work function of the surface of the material is (c = speed of light, h = Planck’s constant.) [MHT-CET 2023]

In photoelectric experiment the stopping potential was measured to be ‘V1’ and ‘V2’ volt with incident light of wavelength ‘λ’ and ‘λ/2’ respectively. The value of V2 is : [MHT-CET 2023]

Online Support

Related Questions

In photoelectric experiment the stopping potential was measured to be ‘V1’ and ‘V2’ volt with incident light of wavelength ‘λ’ and ‘λ/2’ respectively. The value of V2 is : [MHT-CET 2023]

Explore Our Courses

Access To All Courses from VgyanHub

Popular Courses

Company

Need Some Help?