Q33.The de-Broglie wavelength of a particle of mass 6.63 g moving with a velocity of 100 ms−1 is: (1) 10−33 m (2) 10−35 m (3) 10−31 m (4) 10−25 m
What This Question Tests
This question requires the direct application of the de Broglie wavelength formula to calculate the wavelength of a particle given its mass and velocity, emphasizing unit conversion.
Concepts Tested
Formulas Used
λ = h / mv
📚 NCERT Sections This Tests
11.10 — What Is The De Broglie Wavelength Of
Physics Class 12 · Chapter 11
11.10 What is the de Broglie wavelength of (a) a bullet of mass 0.040 kg travelling at the speed of 1.0 km/s, (b) a ball of mass 0.060 kg moving at a speed of 1.0 m/s, and (c) a dust particle of mass 1.0 × 10–9 kg drifting with a speed of 2.2 m/s ?
12.5 — A Hydrogen Atom Initially In The Ground Level Absorbs A Photon,
Physics Class 12 · Chapter 12
12.5 A hydrogen atom initially in the ground level absorbs a photon, which excites it to the n = 4 level. Determine the wavelength and frequency of photon.
11.4 — Monochromatic Light Of Wavelength 632.8 Nm Is Produced By A
Physics Class 12 · Chapter 11
11.4 Monochromatic light of wavelength 632.8 nm is produced by a helium-neon laser. The power emitted is 9.42 mW. (a) Find the energy and momentum of each photon in the light beam, (b) How many photons per second, on the average, arrive at a target irradiated by this beam? (Assume the beam to have uniform cross-section which is less than the target area), and (c) How fast does a hydrogen atom have to travel in order to have the same momentum as that of the photon?
📋 Question Details
- Chapter
- Atomic Structure
- Topic
- de Broglie wavelength
- Year
- 2014
- Shift
- 12 Apr Online
- Q Number
- Q33
- Type
- MCQ
- NCERT Ref
- Class 11 Chemistry Ch 2: Atomic Structure
More from this Chapter
Q82.Which one of the following groupings represents a collection of isoelectronic species? (At. nos,: 55, Br:35) (1) N3−, F−, Na+ (2) Be, Al3+, Cl− (3) Ca2+, Cs+, Br (4) Na+, Ca2+, Mg2+
Q83.In Bohr series of lines of hydrogen spectrum, the third line from the red end corresponds to which one of the following inter-orbit jumps of the electron for Bohr orbits in an atom of hydrogen (1) 5 →2 (2) 4 →1 (3) 2 →5 (4) 3 →2
Q84.The de Broglie wavelength of a tennis ball of mass 60 g moving with a velocity of 10 metres per second is approximately (1) 10−31 metres (2) 10−16 metres (3) 10−25 metres (4) 10−33 metres Planck's constant, h = 6.63 × 10−34Js.
Q79.Which of the following sets of quantum numbers is correct for an electron in 4f orbital? (1) n = 4, l = 3, m = +4, s = + 12 (2) n = 3, I = 2, m = −2, S = + 12 (3) n = 4, I = 3, m = +1, s = + 12 (4) n = 4, I = 4, m −4, s = −12