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Assertion : Thin films such a soap bubble or a thin layer of oil on water show beautiful colours when illuminated by white light. Reason : Light reflected from the upper surface of the thin film due to the interference.
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Nov
Assertion : Thin films such a soap bubble or a thin layer of oil on water show beautiful colours when illuminated by white light. Reason : Light reflected from the upper surface of the thin film due to the interference. Resolving power of reflecting microscope increases with November 13, 2020 Category: AIIMS Last 24 Years [...]
Assertion : When tiny circular obstacle is placed in the path of light from some distance, a bright spot is seen at the centre of the shadow of the obstacle. Reason : Destructive interference occurs at the centre of the shadow.
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Nov
Assertion : When tiny circular obstacle is placed in the path of light from some distance, a bright spot is seen at the centre of the shadow of the obstacle. Reason : Destructive interference occurs at the centre of the shadow. a bright spot is seen at the centre of the shadow of the obstacle. [...]
The transvers displacement of a string (clamped at its both ends) is given by y(x,t)=0.06sin(2/3xs)cos(120πt) Where x and y are in m and t in s. The length of the string 1.5m and its mass is 3.0×10^−2kg.
13
Nov
The transvers displacement of a string (clamped at its both ends) is given by y(x,t)=0.06sin(2/3xs)cos(120πt) Where x and y are in m and t in s. The length of the string 1.5m and its mass is 3.0×10^−2kg. t)=0.06sin(2/3xs)cos(120πt) Where x and y are in m and t in s. The length of the string 1.5m [...]
Assertion: Radio waves can be polarised. Reason: Sound waves in air are longitudinal in nature.
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Nov
Assertion: Radio waves can be polarised. Reason: Sound waves in air are longitudinal in nature. Assertion: Radio waves can be polarised. Reason: Sound waves in air are longitudinal in nature. November 13, 2020 Category: AIIMS Last 24 Years Solved 1996 - 2019 Physics and Chemistry Video Solutions , Chapter 16 - Waves , Physics ,
Assertion : The sun looks bigger in size at sunrise and sunset than during day. Reason : The phenomenon of diffraction bends light rays.
13
Nov
Assertion : The sun looks bigger in size at sunrise and sunset than during day. Reason : The phenomenon of diffraction bends light rays. Assertion : The sun looks bigger in size at sunrise and sunset than during day. Reason : The phenomenon of diffraction bends light rays. November 13, 2020 Category: AIIMS Last 24 [...]
In a single slit diffraction the distance between plane of slit and screen is 1 m. The size of the slit is 0.7 mm and second maximum is formed at the distance of 2 mm from the centre of the screen, then find out the wavelength of light.
13
Nov
In a single slit diffraction the distance between plane of slit and screen is 1 m. The size of the slit is 0.7 mm and second maximum is formed at the distance of 2 mm from the centre of the screen, then find out the wavelength of light. In a single slit diffraction the distance [...]
For the travelling harmonic wave y(x, t) = 2.0cos 2π (10t – 0.0080 x + 0.35 ) where x and y are in cm and t in s. Calculate the phase difference between oscillatory motion of two points separated by a distance of
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Nov
For the travelling harmonic wave y(x, t) = 2.0cos 2π (10t – 0.0080 x + 0.35 ) where x and y are in cm and t in s. Calculate the phase difference between oscillatory motion of two points separated by a distance of For the travelling harmonic wave y(x t) = 2.0cos 2π (10t - [...]
A transverse harmonic wave on a string is described by y(x,t) = 3.0sin(36t + 0.018x + π/4) where x and y are in cm and t in s. The positive direction of x is from left to right. (a) Is this a travelling wave or a stationary wave? If it is travelling what are the speed and direction of its propagation? (b) What are its amplitude and frequency? (c) What is the initial phase at the origin? (d) What is the least distance between two successive crests in the wave?
13
Nov
A transverse harmonic wave on a string is described by y(x,t) = 3.0sin(36t + 0.018x + π/4) where x and y are in cm and t in s. The positive direction of x is from left to right. (a) Is this a travelling wave or a stationary wave? If it is travelling what are the [...]
A hospital uses an ultrasonic scanner to locate tumours in a tissue. What is the wavelength of sound in the tissue in which the speed of sound is 1.7 km/s ? The operating frequency of the scanner is 4.2 MHz.
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Nov
A hospital uses an ultrasonic scanner to locate tumours in a tissue. What is the wavelength of sound in the tissue in which the speed of sound is 1.7 km/s ? The operating frequency of the scanner is 4.2 MHz. A string of mass 2.50 kg is under a tension of 200 N. The length [...]
A bat emits ultrasonic sound of frequency 1000 kHz in air. If the sound meets a water surface, what is the wavelength of (a) the reflected sound. (b) the transmitted sound? Speed of sound in air is 340 m/s and in water 1486 m/s .
13
Nov
A bat emits ultrasonic sound of frequency 1000 kHz in air. If the sound meets a water surface, what is the wavelength of (a) the reflected sound. (b) the transmitted sound? Speed of sound in air is 340 m/s and in water 1486 m/s . A bat emits ultrasonic sound of frequency 1000 kHz in [...]