EASY
JEE Advanced
IMPORTANT
Earn 100

The de-Broglie wavelength of a body of mass m and kinetic energy E is given by

50% studentsanswered this correctly

Important Questions on Modern Physics

EASY
JEE Advanced
IMPORTANT
Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 9 - Modern Physics>Objective Problems [Level 1]>Q 136
Two electrons are moving with the same speed v. One electron enters a region of uniform electric field while the other enters a region of uniform magnetic field. After some time, if the de-Broglie wavelengths of the two are λ1 and λ2, then
EASY
JEE Advanced
IMPORTANT
Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 9 - Modern Physics>Objective Problems [Level 1]>Q 137
If λp and λe denote the de-Broglie wavelength of proton and electron after they are accelerated from rest through the same potential difference, then
EASY
JEE Advanced
IMPORTANT
Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 9 - Modern Physics>Objective Problems [Level 1]>Q 138
An electron and proton are accelerated through the same potential difference. The ratio of their de-Broglie wavelength will be
EASY
JEE Advanced
IMPORTANT
Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 9 - Modern Physics>Objective Problems [Level 1]>Q 139
A proton accelerated through a potential difference of 100 V, has de-Broglie wavelength λ0. The de-Broglie wavelength of an α-particle, accelerated through 800 V is
EASY
JEE Advanced
IMPORTANT
Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 9 - Modern Physics>Objective Problems [Level 1]>Q 140
Matter waves
EASY
JEE Advanced
IMPORTANT
Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 9 - Modern Physics>Objective Problems [Level 1]>Q 141
Which of the following graphs represents the variation of the particle momentum and the associated de-Broglie wavelength?
EASY
JEE Advanced
IMPORTANT
Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 9 - Modern Physics>Objective Problems [Level 1]>Q 142
The masses of neutron and proton are 1.0087 amu and 1.0073 amu respectively. If two neutrons and two protons combine to form a helium nucleus ( α -particles) of mass 4.0015 amu. The binding energy of the helium nucleus will be (1 amu=931 MeV)
EASY
JEE Advanced
IMPORTANT
Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 9 - Modern Physics>Objective Problems [Level 1]>Q 143
Outside a nucleus