Question Answers
Sahay Sir > Question Answers
A sphere is dropped into a viscous liquid of viscosity n from some height. If the density of material and liquid are rho and sigma respectively ( rho > sigma ) then which of the following is/are incorrect.
12
Oct
A sphere is dropped into a viscous liquid of viscosity n from some height. If the density of material and liquid are rho and sigma respectively ( rho > sigma ) then which of the following is/are incorrect. each with surface energy E If n drops of a liquid join to form a single drop [...]
In the spectrum of light of a luminous heavenly body the wavelength of a spectral line is measured to be 4747 A which actual wavelength of the line is 4700 A. The relative velocity of the heavenly body
11
Oct
In the spectrum of light of a luminous heavenly body the wavelength of a spectral line is measured to be 4747 A which actual wavelength of the line is 4700 A. The relative velocity of the heavenly body A spectral line lemda = 5000 A in the light coming from a distant star is observed [...]
A light source approaches the observer with velocity 0.8 c. The doppler shift for the light of wavelength 5500 A is
11
Oct
A light source approaches the observer with velocity 0.8 c. The doppler shift for the light of wavelength 5500 A is A light source approaches the observer with velocity 0.8 c. The doppler shift for the light of wavelength 5500 A is October 11, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP [...]
A star moves away from earth at speed 0.8 c while emitting light of frequency 6 *10^14 Hz. What frequency will be observed on the earth ( in units of 10^14 Hz)
11
Oct
A star moves away from earth at speed 0.8 c while emitting light of frequency 6 *10^14 Hz. What frequency will be observed on the earth ( in units of 10^14 Hz) A star moves away from earth at speed 0.8 c while emitting light of frequency 6 *10^14 Hz. What frequency will be observed [...]
A star emitting light of wavelength 5896 A is moving away from the earth with a speed of 3600 km/s. The wavelength of light observed on earth will
11
Oct
A star emitting light of wavelength 5896 A is moving away from the earth with a speed of 3600 km/s. The wavelength of light observed on earth will A star emitting light of wavelength 5896 A is moving away from the earth with a speed of 3600 km/s. The wavelength of light observed on earth [...]
The apparent wavelength of the light from a star moving away from the earth is 0.01% more than its real wavelength. Then the velocity of star is
11
Oct
The apparent wavelength of the light from a star moving away from the earth is 0.01% more than its real wavelength. Then the velocity of star is The apparent wavelength of the light from a star moving away from the earth is 0.01% more than its real wavelength. Then the velocity of star is October [...]
A spectral line lemda = 5000 A in the light coming from a distant star is observed as a 5200 A. What will be recession velocity of the star?
11
Oct
A spectral line lemda = 5000 A in the light coming from a distant star is observed as a 5200 A. What will be recession velocity of the star? A spectral line lemda = 5000 A in the light coming from a distant star is observed as a 5200 A. What will be recession velocity [...]
In order to see diffraction, the thickness of the film is
11
Oct
In order to see diffraction, the thickness of the film is In order to see diffraction the thickness of the film is October 11, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
If we observe the single slit Fraunhofer diffraction with wavelength lemda and slit width d, the width of the central maxima is 2 theta. On decreasing the slit width for the same lemda
11
Oct
If we observe the single slit Fraunhofer diffraction with wavelength lemda and slit width d, the width of the central maxima is 2 theta. On decreasing the slit width for the same lemda If we observe the single slit Fraunhofer diffraction with wavelength lemda and slit width d the width of the central maxima is [...]
What will be the angular width of central maxima in Fraunhofer diffraction when light of wavelength 6000 A is used and slit width is 12 * 10^-5 cm?
11
Oct
What will be the angular width of central maxima in Fraunhofer diffraction when light of wavelength 6000 A is used and slit width is 12 * 10^-5 cm? What will be the angular width of central maxima in Fraunhofer diffraction when light of wavelength 6000 A is used and slit width is 12 * 10^-5 [...]