EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 28 - Dual Nature of Matter and Radiation>CG PET 2017>Q 1

MEDIUM

CG PET

IMPORTANT

Earn 100

When a light of wavelength $400 nm$ is incident on the cathode of a photocell, the stopping potential recorded is $6 V$ . If the wavelength of the incident light is increased to $600 nm,$ then the new stopping potential is

50% studentsanswered this correctly

Important Questions on Dual Nature of Matter and Radiation

EASY

CG PET

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 28 - Dual Nature of Matter and Radiation>CG PET 2018>Q 2

The photoelectric effect proves that

EASY

CG PET

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 28 - Dual Nature of Matter and Radiation>CG PET 2018>Q 3

A monochromatic light of frequency

v

is incident on emitter having threshold frequency

v_{0}

. The kinetic energy of ejected electron will be

MEDIUM

CG PET

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 28 - Dual Nature of Matter and Radiation>CG PET 2019>Q 4

As the intensity of incident light increases