22 march

1. If incident photon has frequency 1.5 times the work function, the maximum kinetic energy is E. If frequency is halved and intensity is doubled, the photocurrent will increase

2. If incident photon has frequency 1.5 times the work function, the maximum kinetic energy is E. If frequency is halved and intensity is doubled, the photocurrent may increase

• Both correct

• Both wrong

• Only 1st correct

• Only 2nd correct

1. Experimentally, 1000 photons are required to remove 1 electron in photoelectric effect

2. Photoelectric effect can only be explained by particle nature of light

3. According to de broglie, light can have particle nature

4. Photoelectric effect is one to one interactional phenomenon.

How many correct????

• 1

• 2

• 3

• 4

1. When highly energetic beta ray is incident on nucleus of heavier element, the entity released due to attraction between nucleus and electron have same relativistic mass in all mediums

2. Gamma ray is collection of quanta

3. Initially, light was travelling in vaccum. Suddenly its trajectory becomes as such that it enters in water and then it strikes metal surface of aluminium which is submerged in water. If the trajectory was not changed and aluminium was in air then stopping potential would have been more.

How many wrong?????

• 1

• 2

• 3

• All wrong

1. If two body have same de broglie wavelength, it should have same momentum

2. Household aluminum is best for studying photoelectric effect

3. De broglie wavelength is wavelength of matter wave

How many correct??

• 1

• 2

• 3

• All

1. E=hf is kinetic energy of photon

2. E=hf is total energy of photon

3. E=hf is the energy whuch can't be converted in other forms

How many correct????

• 1

• 2

• 3

• None