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

Liquids and gases never exhibit:
→

Formula for dispersive power is (where symbols have their usual meanings)

(a)  

(b)

(c)   

(d)

→
The dielectric constant K of an insulator will be-
→

An e.m.f. of 12 volts is induced in a given coil when the current in it changes at the rate of 48 amperes per minute. The self inductance of the coil is

(a) 0.25 henry

(b) 15 henry

(c) 1.5 henry

(d) 9.6 henry
→
A metallic particle having no net charge is placed near a finite metal plate carrying a positive charge. The electric force on the particle will be:
→
The lead marked with the arrow is the _______.

→
Which of the following statements is wrong ? Magnetic lines of force:
→
The molecules having permanent electric dipole moment even in the absence of electric field are called as:
→

Assertion :  The stars twinkle while the planets do not.

Reason    : The stars are much bigger in size than the planets.

(a) If both assertion and reason are true and the reason is the correct explanation of the assertion.

(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.

(c) If assertion is true but reason is false.

(d) If the assertion and reason both are false.
→

Which of the following phenomena contributes significantly to the reddish appearance of the sun at sunrise or sunset?

→