Download App

Dual Nature of Radiation and Matter — Physics STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 SciencePhysicsDual Nature of Radiation and Matter1 Mark
MCQ
The electron cannot exist inside the nucleus because:
  • A
    de-Broglie wavelength associated with electron in $\beta$ -decay is much less than the size of nucleus
  • B
    de-Broglie wavelength associated with electron in $\beta$ -decay is much greater than the size of nucleus
  • C
    de-Broglie wavelength associated with electron in $\beta$ -decay is equal to the size of nucleus
  • D
    de-Broglie negative charge cannot exist in the nucleus
✓

Answer

  1. de-Broglie wavelength associated with electron in β -decay is much greater than the size of nucleus

Explanation:

$\beta$−decay:

$\beta$− radioactivity occurs when a nucleus emits a negative electron from an unstable radioactive nucleus whose deBroglie wavelength of  order MeV is much larger than nuclear dimensions.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q [1M]" from Dual Nature of Radiation and Matter→Dual Nature of Radiation and Matter — all question types→Physics STD 12 Science question papers→Bihar Board STD 12 Science question papers→Bihar Board question paper generator→

Similar questions

Quantam nature of light is explained by which of the following phenomenon

(a) Huygen wave theory

(b) Photoelectric effect

(c) Maxwell electromagnetic theory

(d) de-Broglie theory
→

If the speed of light were 2/3 of its present value, the energy released in a given atomic explosion will be decreased by a fraction

(a) 2/3

(b) 4/9

(c) 3/4

(d) 5/9
→
The plate current in a diode is zero. It is possible that:
→

A straight conductor carries a current of 5A. An electron travelling with a speed of 5  parallel to the wire at a distance of 0.1m from the conductor, experiences a force of

(a) 8  

(b) 3.2

(c) 8  

(d) 1.6  
→

The  electric charge in uniform motion produces

(a) An electric field only

(b) A magnetic field only

(c) Both electric and magnetic field

(d) Neither electric nor magnetic field
→

Cathode rays are similar to visible light rays in that

(a) They both can be deflected by electric and magnetic fields

(b) They both have a definite magnitude of wavelength

(b) They both have a definite magnitude of wavelength

(d) They both can expose a photographic plate
→

Heavy water is

(a) Water at 4 ℃

(b) Compound of deuterium and oxygen  

(c) Compound of heavy oxygen and heavy hydrogen
(d) Water, in which soap does not lather
→

When a lamp is connected in series with capacitor, then

(a) Lamp will not glow

(b) Lamp will burst out

(c) Lamp will glow normally

(d) None of these
→

Figure here shows P and Q as two equally intense coherent sources emitting radiations of wavelength 20 m. The separation PQ is 5.0 m and phase of P is ahead of the phase of Q by 90o. A, B and C are three distant points of observation equidistant from the mid-point of PQ. The intensity of radiations at A, B, C will bear the ratio

(a) 0 : 1 : 4

(b) 4 : 1 : 0

(c) 0 : 1 : 2

(d) 2 : 1 : 0
→

The possible quantum number for 3d electron are

(a) n = 3, l = 1,  

(b) n = 3, l = 2,  

(c) n = 3, l = 1,  

(d) n = 3, l =0,  
→