Light & Optics MCQs with Answers

Which of the following is the highest energy photon?

• A.Radio waves
• B.Visible light
• C.Gamma rays
• D.Microwaves

Which type of electromagnetic radiation has the shortest wavelength and highest energy?

• A.X-rays
• B.Ultraviolet rays
• C.Gamma rays
• D.Microwaves

The excited state which persists for unusually longer period of time is called?

• A.Ground state
• B.Plasma state
• C.Transition state
• D.Metastable state

Past Paper MCQ

When normal sunlight passes through a prism, into how many colours does it break?

• A.5
• B.9
• C.7
• D.6

Image obtained in case of a simple microscope is ?

• A.Real and erect
• B.Real and inverted
• C.Virtual and inverted
• D.Virtual and erect

Which of the following pieces of experimental evidence contributed to the development of quantum mechanics?

• A.Photoelectric effect
• B.Brownian motion
• C.Tyndall effect
• D.Doppler effect

Which of the following are electromagnetic radiations?

• A.Sound waves
• B.Ultrasonic waves
• C.X-rays
• D.Seismic waves

The reverse process of photoelectric effect is?

• A.Compton effect
• B.Pair production
• C.X-rays
• D.Thermionic emission

Gamma rays consists of _?

• A.Radiations similar to x-rays
• B.High-speed electrons
• C.Helium nuclei
• D.Positively charged particles

Which one of the following is used by sailors for communication before the invention of the telephone or radio?

• A.Smoke signals
• B.Light signals
• C.Drum beats
• D.Carrier pigeons