# Dual Nature of Matter and Radiation-Einstein's Photoelectric Equation (NEET (NTA-National Eligibility cum Medical Entrance Test) Physics): Questions 8 - 11 of 11

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 2142 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 550.00 or

## Question number: 8

» Dual Nature of Matter and Radiation » Einstein's Photoelectric Equation

MCQ▾

### Question

The work function for the surface of aluminum is 4.2 eV. What will be the wavelength of that incident light for which the stopping potential will be 0? (h = 6.6 ×10 -34 J-s, e = 1.6 × 10 -19)

### Choices

Choice (4) Response

a.

2946 Å

b.

2496 Å

c.

2649 Å

d.

2946 × 10 -7 m

## Passage

A physicist wishes to eject electrons by shining light on a metal surface. The light source emits light of wavelength of 450 nm. The table lists the only available metals and their work functions.

 Metal W 0 (eV) Barium 2.5 Lithium 2.3 Tantalum 4.2 Tungsten 4.5

## Question number: 9 (1 of 3 Based on Passage) Show Passage

» Dual Nature of Matter and Radiation » Einstein's Photoelectric Equation

MCQ▾

### Question

Which option correctly identifies the metal that will produce the most energetic electrons and their energies?

### Choices

Choice (4) Response

a.

Lithium, 2.30 eV

b.

Tungsten, 1.75 eV

c.

Lithium, 0.45 eV

d.

Tungsten, 2.75 eV

## Question number: 10 (2 of 3 Based on Passage) Show Passage

» Dual Nature of Matter and Radiation » Einstein's Photoelectric Equation

MCQ▾

### Question

Suppose photoelectric experiment is done separately with these metals with light of wavelength 450 nm. The maximum magnitude of stopping potential amongst all the metals is-

### Choices

Choice (4) Response

a.

0.45 volt

b.

4.5 volt

c.

2.75 volt

d.

0.25 volt

## Question number: 11 (3 of 3 Based on Passage) Show Passage

» Dual Nature of Matter and Radiation » Einstein's Photoelectric Equation

MCQ▾

### Question

Which metal (s) can be used to produce electrons by the photoelectric effect from given source of light?

### Choices

Choice (4) Response

a.

Lithium, tantalum or tungsten

b.

Barium or lithium

c.

Tungsten or tantalum

d.

Barium only

f Page