Questions
Grade -12 (NEB) > Science Physics
Interference, Physical Optics
In a young’s double-slit experiment, the slits are 0.03 cm apart and the screen is placed 1.54 m away. The distance between the central bright fringe and fourth bright fringe is 1 cm. Calculate the wavelength of light used.
In a young's double-slit experiment, the slits are 0.03 cm apart and the screen is placed 1.54 m away. The distance between the central bright fringe and fourth bright fringe is 1 cm. Calculate the wavelength of light used.
Grade -12 (NEB) > Science Physics
Interference, Physical Optics
Describe Newton’s ring experiment and derive an expression for the wavelength of light.
Describe Netwon's ring experiment and derive expression for wavelength of light.
Grade -12 (NEB) > Science Physics
Nature and Propagation of Light, Physical Optics
If light travels from one medium to another, its velocity changes. Is it due to the change in frequency or wavelength? Explain.
If light travels from one medium to another, its velocity changes. Is it due to the change in frequency or wavelength? Explain.
Grade -12 (NEB) > Science Physics
Waves, Waves in Pipes and Strings
A wire whose mass is 10^-3 kg/m is stretched by a load of 4kg over the two bridges of a sonometer wire 1 m apart. It is struck at its middle point. What would be the wavelength and frequency of its fundamental vibration?
A wire whose mass is 10-3 kg/m is stretched by a load of 4kg over the two bridges of a sonometer wire 1 m apart. It is struck at its middle point. What would be the wavelength and frequency of its fundamental vibration?
Grade -12 (NEB) > Science Physics
Mechanical Waves, Waves
A source of the sound of frequency 550 Hz emits waves of wavelength 60 cm in the air at 20° C. What would be the wavelength of sound from the source in the air at 0° C
A source of the sound of frequency 550 Hz emits waves of wavelength 60 cm in the air at 20° C. What would be the wavelength of sound from the source in the air at 0° C.
Grade -12 (NEB) > Science Physics
Wave Motion, Waves
A radio station broadcasts at 800 kHz. If the radio waves (em-waves) travel with a speed of 3×10^8 m/s, what will be the wavelength of the wave?
A radio station broadcasts at 800 kHz. If the radio waves (em-waves) travel with a speed of 3x10^8 m/s, what will be the wavelength of the wave?
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