| ⇦ | 
| ⇨ |
The speed of an electron having a wavelength of 10⁻¹⁰ m is
Options
(a) 6.26×10⁶ m/s
(b) 5.25 x10⁶ m/s
(c) 7.25×10⁶ m/s
(d) 4.24×10⁶ m/s
Correct Answer:
7.25×10⁶ m/s
Explanation:
λ = h / momentum = h / mv
v = h / mλ = 6.6 × 10⁻³⁴ / (9 × 10⁻³¹) × 10⁻¹°
v = 7.25 × 10⁶ ms⁻¹
Related Questions: - A boat of mass 40 kg is at rest.A dog of mass 4 kg moves in the boat
- If in a L-R series circuit the power factor is 1/2 and R=100Ω, then the value of L is,
- If the value of potential in an A.C circuit is 10 V, the peak value of potential is
- A sphere of 4cm radius is suspended with in a hollow sphere of 6cm radius. If the inner
- A common emitter amplifier has a voltage gain of 50, an input impedance of 100Ω
Topics: Dual Nature of Matter and Radiation
(150)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A boat of mass 40 kg is at rest.A dog of mass 4 kg moves in the boat
- If in a L-R series circuit the power factor is 1/2 and R=100Ω, then the value of L is,
- If the value of potential in an A.C circuit is 10 V, the peak value of potential is
- A sphere of 4cm radius is suspended with in a hollow sphere of 6cm radius. If the inner
- A common emitter amplifier has a voltage gain of 50, an input impedance of 100Ω
Topics: Dual Nature of Matter and Radiation (150)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
P=h/lamba…..1equ
P= momentum
H=Planck’s constant
Lamba= wavelength
And
P=MV…..2 equ
M= mass
V= speed
Put 2 in 1
MV=h/lamba
9.1×10^-31*v=6.6×10^-34/10^-10
By solving u get the value of v
V=0.725*10^7=7.25*10^6