Chapter 28 – Electromagnetic Waves
Sahay Sir > Question Answers > NEET Last 32 Years Solved 1988 - 2019 Physics and Chemistry Video Solutions > Physics > Chapter 28 - Electromagnetic Waves
In total internal reflection when the angle of incidence is equal to the critical angle for the pair of medium in contact, what will be angle of refraction?
20
Aug
In total internal reflection when the angle of incidence is equal to the critical angle for the pair of medium in contact, what will be angle of refraction? In total internal reflection when the angle of incidence is equal to the critical angle for the pair of medium in contact what will be angle of [...]
A concave mirror of focal length ′f1′ is placed at a distance of ′d′ from a convex lens of focal length ′f2′. A beam of light coming from infinity and falling on this convex lens concave mirror combination returns to infinity. The distance ′d′ must equal
20
Aug
A concave mirror of focal length ′f1′ is placed at a distance of ′d′ from a convex lens of focal length ′f2′. A beam of light coming from infinity and falling on this convex lens concave mirror combination returns to infinity. The distance ′d′ must equal If λv λx and λm represents the wavelength of [...]
An object is placed at a distance of 40 cm from a concave mirror of focal length 15 cm. If the object is displaced through a distance of 20 cm towards the mirror, the displacement of the image will be
20
Aug
An object is placed at a distance of 40 cm from a concave mirror of focal length 15 cm. If the object is displaced through a distance of 20 cm towards the mirror, the displacement of the image will be An object is placed at a distance of 40 cm from a concave mirror of [...]
A beam of light from a source L is incident normally on a plane mirror fixed at a certain distance x from the source. The beam is reflected back as a spot on a scale placed just above the source L. When the mirror is rotated through a small angle θ, the spot of the light is found to move through a distance y on the scale. The angle θ is given by
20
Aug
A beam of light from a source L is incident normally on a plane mirror fixed at a certain distance x from the source. The beam is reflected back as a spot on a scale placed just above the source L. When the mirror is rotated through a small angle θ, the spot of the [...]
If λv, λx and λm represents the wavelength of visible light X-ray and microwave respectively then
20
Aug
If λv, λx and λm represents the wavelength of visible light X-ray and microwave respectively then If λv λx and λm represents the wavelength of visible light X-ray and microwave respectively then August 20, 2020 Category: Chapter 28 - Electromagnetic Waves , NEET Last 32 Years Solved 1988 - 2019 Physics and Chemistry Video Solutions [...]
Which colour of the light has the longest wavelength ?
20
Aug
Which colour of the light has the longest wavelength ? Which colour of the light has the longest wavelength ? August 20, 2020 Category: Chapter 28 - Electromagnetic Waves , NEET Last 32 Years Solved 1988 - 2019 Physics and Chemistry Video Solutions , Physics ,
Which of the following statement is false for the properties of electromagnetic waves ?
20
Aug
Which of the following statement is false for the properties of electromagnetic waves ? Which of the following statement is false for the properties of electromagnetic waves ? August 20, 2020 Category: Chapter 28 - Electromagnetic Waves , NEET Last 32 Years Solved 1988 - 2019 Physics and Chemistry Video Solutions , Physics ,
The decreasing order of wavelength of infrared, microwave, ultraviolet and gamma rays is
20
Aug
The decreasing order of wavelength of infrared, microwave, ultraviolet and gamma rays is microwave The decreasing order of wavelength of infrared ultraviolet and gamma rays is August 20, 2020 Category: Chapter 28 - Electromagnetic Waves , NEET Last 32 Years Solved 1988 - 2019 Physics and Chemistry Video Solutions , Physics ,
The energy of the em waves is of the order of 15 keV. To which part of the spectrum does it belong?
20
Aug
The energy of the em waves is of the order of 15 keV. To which part of the spectrum does it belong? The energy of the em waves is of the order of 15 keV. To which part of the spectrum does it belong? August 20, 2020 Category: Chapter 28 - Electromagnetic Waves , NEET [...]
A parallel plate capacitor of capacitance 20μF is being charged by a voltage source whose potential is changing at the rate of 3 V/s. The conduction current through the connecting wires, and the displacement current through the plates of the capacitor, would be, respectively
20
Aug
A parallel plate capacitor of capacitance 20μF is being charged by a voltage source whose potential is changing at the rate of 3 V/s. The conduction current through the connecting wires, and the displacement current through the plates of the capacitor, would be, respectively A parallel plate capacitor of capacitance 20μF is being charged by [...]