Chapter 28 – Electromagnetic Waves

Light wave enters from medium 1 to medium 2. Its velocity in 2nd medium is double from 1st. For total internal reflection the angle of incidence must be greater than Light wave enters from medium 1 to medium 2. Its velocity in 2nd medium is double from 1st. For total internal reflection the angle of [...]

A person uses +1.5 D glasses to have normal vision from 25cm onwards. He uses a + 20D lens as a simple microscope to see an object. Calculate the maximum magnifying power, if he uses the microscope without glasses ? A person uses +1.5 D glasses to have normal vision from 25cm onwards. He uses [...]

The length of deviation for a glass prism is equal to its refracting angle. The refractive index of glass is 1.5. Then the angle of prism is The length of deviation for a glass prism is equal to its refracting angle. The refractive index of glass is 1.5. Then the angle of prism is November [...]

The frequency of a light wave in a material is 2 × 10^ 14 Hz and wavelength is 5000 A^o . The refractive index of material will be The frequency of a light wave in a material is 2 × 10^ 14 Hz and wavelength is 5000 A^o . The refractive index of material will [...]

A far sighted person has his near point 50 cm. Find the power of lens he should use to see at 25 cm clearly. A far sighted person has his near point 50 cm. Find the power of lens he should use to see at 25 cm clearly. November 13, 2020 Category: AIIMS Last 24 [...]

Two lens of focal length −20cm and +10cm are put in combination, find the power of the combination. find the power of the combination. Two lens of focal length −20cm and +10cm are put in combination November 13, 2020 Category: AIIMS Last 24 Years Solved 1996 - 2019 Physics and Chemistry Video Solutions , Chapter [...]

A convex lens of refractive index 2/3 has a power of 2.5 D in air. If it is placed in a liquid of refractive index 2, then the new power of the lens is: A convex lens of refractive index 2/3 has a power of 2.5 D in air. If it is placed in a [...]

For a person near point of vision is 100 cm. Then the power of lens he must wear so as to have normal vision, should be: For a person near point of vision is 100 cm. Then the power of lens he must wear so as to have normal vision should be: November 13, 2020 [...]

The magnifying power of a compound microscope increases with The magnifying power of a compound- microscope increases with November 13, 2020 Category: AIIMS Last 24 Years Solved 1996 - 2019 Physics and Chemistry Video Solutions , Chapter 28 - Electromagnetic Waves , Physics ,

When white light passes through a prism, the deviation is maximum for the deviation is maximum for When white light passes through a prism November 13, 2020 Category: AIIMS Last 24 Years Solved 1996 - 2019 Physics and Chemistry Video Solutions , Chapter 28 - Electromagnetic Waves , Physics ,