IN This Post SCIPHY IS Providing Previous Year Questions of ELECTROMAGNETIC WAVES .Practice all these Questions To check your knowledge.
PREVIOUS YEAR QUESTIONS OF EM WAVES
Q-1(A) : X-Rays Are Produced when slow moving electrons are stopped by a metal target of high atomic number.
(R): X RAYS CONSIST OF LOW ENERGY PHOTONS (2024-25, SET-1 ,2,3 (55/6/1) )
Q-2.Name the Electromagnetic Wave used (i) In Radar (ii) In Eye Surgery and (iii) As a diagnostic Tool in Medicine. Write their wavelength range also. (2024-25, SET-1 ,2,3 (55/6/1) ) (3 Marks)
Q-3 (a)On What Factors does the speed of an electromagnetic wave in a medium depend ?
(b) How is an electromagnetic wave Produced?
(c)Sketch a Schematic Diagram Depicting the ELECTRIC & MAGNETIC Fields for an Electromagnetic Wave Propagating along Z-axis. (2023-24 All sets )
Q-4 Name the Electromagnetic Waves also known as ‘heat waves’. (2022-23, 55/4/3) (a) Radio waves
(b) Microwaves
(c) X-rays
(d) Infrared waves
Q-5.(a) What is a displacement current ? How is it different from a conduction current?
OR
(b) Write any Two Characteristics of an electromagnetic Waves. Why microwaves used in Radar system? (2022-23, 55/4/3)
Q-6 The Electromagnetic Waves used in Radar System are : (2022-23, 55/4/2) (a) Infrared waves
(b) Ultraviolet rays
(c) Microwaves
(d) X -RAYS
Q-7 Welders wear Special glass goggles or face masks with glass windows to protect their eyes from radiations produced by welding arcs. These Radiations are: (2024-25 All sets ) (a) X-rays
(b) UV rays
(c) INFRARED Waves
(d) Gamma Rays
Q-8 Displacement Current Exist only when (2019-20) (a) electric field is changing (b)Magnetic Field is Changing (c)Electric field is not Changing (d)Magnetic Field is not Changing
Q-9 Electromagnetic Waves used as a Diagnostic tool in medicine are (55/2/1 ,Set-1,2019-20) (a) X-RAYS
(b) UV Rays
(c) Infrared Radiation
(d) Ultrasonic waves
Q-10 Which of the Following electromagnetic Waves has (a) Minimum Wavelength (b) Minimum Frequency? Write One use of Each of these two Waves . (2023-24 All sets )
INFRARED WAVES ,MICROWAVES ,GAMMA RAYS AND X-RAYS
Q-11 In a Travelling Plane Electromagnetic Wave ,which of the following have Zero Average Value? (a)Magnetic energy and electric energy (b)Magnetic field and Electric Field (c)Magnetic Energy and Magnetic FIELD (d)Electric Energy and Electric Field (2019-20,55/2/3)
Q-12.(a) Why are Infrared waves often called Heat Waves ?Explain. (2017-18,55/2)
(b) What do you understand by the Statement,” ELECTROMAGNETIC WAVES TRANSPORT MOMENTUM“?
Q-13.Name the Electromagnetic radiations used for (2017-18,55/2)
(a) Water Purification ,and (b) Eye surgery.
Q-14.In Which Directions do the Electric and Magnetic Field vectors Oscillate in an Electromagnetic Wave Propagating along the X-axis. (2017,55/3)
Q-15 In Four regions I, II ,III and IV the magnetic field is given by ( Set 3 code 55/2/3 CBSE 2024 ) I . By = B0 sinkz
II . By = B0 cos kz
III By = B0 sin ( k z – wt )
IV . By = B0 sin k z + B0 cos k z . The electromagnetic wave will exist in the region:
OR
Q-15 Identify the Electromagnetic Waves whose Wavelengths vary a (2016-17,55/1)
(a) 10-12m<λ<10-18
(b) 10-3m<λ<10-1m .Write one use for each.
Q-16.How are Electromagnetic Waves produced ?What is the Source Of energy of these waves ?Write mathematical expressions for Electric and Magnetic fields of an electromagnetic wave propagating along z-axis. Write any two important properties of electromagnetic waves. (SET 55/2/N)
Q-17.Electromagnetic Waves with wavelength 10nm are called: (SET -1 CBSE 55/2/1 ) (a) Infrared waves
(b)UV Rays
(c) GAMMA Rays
(d) X rays
Q-18.Define Displacement Current. What Role does it play while charging a Capacitor by dc source. Is the value of displacement current same as that of the conduction current. ( Set -1, 55/5/1)
Q-19.To which part of the Electromagnetic spectrum does a wave of Frequency 5×1019Hz belong? (Set-55/1)
Q-20.Name the phenomenon which shows the Quantum nature of Electromagnetic Radiation. (2016-17,Set- 2,55/2)
Q-21. In Which directions do the Electric and Magnetic Field vectors Oscillate in an Electromagnetic Wave Propagating along the X-axis? (2016-17, Set -3, 55/3)
Q-22. Arrange the Following Electromagnetic Waves in the order of their increasing Wavelength: (a) Gamma Rays
(b)Microwaves
(c)X-Rays
(d)Radio Waves
HOW are Infrared waves produced? What role does Infrared -red Radiation play in (i) maintaining the Earth’s Warmth and (ii) Physical Therapy?
Q-23 Identify the Different types of EM Radiations ,Which are used (a) to kill germs (55/1)
(b) for Physical Therapy
Q-24.Identify Electromagnetic Waves which : (i) are used in Radar System (ii)affect a Photographic Plate (iii) are used in Surgery. Write their Frequency Range. (Set-3, 55/4/3)
Q-25.Name the EM Waves used for Studying Crystal Structure Of Solids. What is its frequency Range? (55/2)
Q-26.Write the Relation for the Speed of Electromagnetic Waves in terms of the amplitudes of Electric and Magnetic Fields. (2016-17,55/2)
Q-27.Do Electromagnetic Waves Carry Energy and Momentum? ( Set-1,55/1)
Worksheet based on EM Waves
ANSWER KEY OF WORKSHEET
You Must Check
Most Important QUESTIONS Of EM waves Class 12 PHYSICS
NCERT SOLUTION OF EM WAVES CLASS 12 PHYSICS
DSSSB TGT PREVIOUS YEAR PAPERS -PDF DOWNLOAD WITH SOLUTION
Q-1 Name the EM Wave that are widely used as a diagnostic tool in medicine?
Q-2 Name the current which can flow even in the absence of electric charge?
Q-3 HOW Are EM Waves produced by accelerating charges?
Q-4 DO ELECTROMAGNETIC WAVES CARRY ENERGY AND MOMENTUM?