Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions)
An observer standing on a railway crossing receives frequencies 2.2 kHz and 1.8 kHz when the train approaches and recedes from the observer. Find the velocity of the train
07
Sep
An observer standing on a railway crossing receives frequencies 2.2 kHz and 1.8 kHz when the train approaches and recedes from the observer. Find the velocity of the train An observer standing on a railway crossing receives frequencies 2.2 kHz and 1.8 kHz when the train approaches and recedes from the observer. Find the velocity [...]
A source S emitting sound of 300 Hz is fixed on block A which is attached to free end of a spring SA as shown in the figure. The detector D fixed on block B attached to the free end of spring SB detects this sound.
07
Sep
A source S emitting sound of 300 Hz is fixed on block A which is attached to free end of a spring SA as shown in the figure. The detector D fixed on block B attached to the free end of spring SB detects this sound. a passenger standing on the station platform hears beats [...]
Two train whistles have identical frequencies of 180 Hz. When one train is at rest in the station and the other is moving nearby, a passenger standing on the station platform hears beats with a frequency of 2.00 beats/s
07
Sep
Two train whistles have identical frequencies of 180 Hz. When one train is at rest in the station and the other is moving nearby, a passenger standing on the station platform hears beats with a frequency of 2.00 beats/s a passenger standing on the station platform hears beats with a frequency of 2.00 beats/s Two [...]
The sound level at a distance of 3.00 m from a source is 120 dB. At what distance will the sound level be (a) 100 dB and (b) 10.0 dB?
07
Sep
The sound level at a distance of 3.00 m from a source is 120 dB. At what distance will the sound level be (a) 100 dB and (b) 10.0 dB? The sound level at a distance of 3.00 m from a source is 120 dB. At what distance will the sound level be (a) 100 [...]
A source of sound having natural frequency f0 = 1800 Hz is moving uniformly along a line separated from a stationary listener by a distance l = 250 m. The velocity of source is n = 0.80 times the velocity of sound. Find:
07
Sep
A source of sound having natural frequency f0 = 1800 Hz is moving uniformly along a line separated from a stationary listener by a distance l = 250 m. The velocity of source is n = 0.80 times the velocity of sound. Find: A train approaching a railway crossing at a speed of 120 km/h [...]
A train approaching a railway crossing at a speed of 120 km/h sounds a short whistle at frequency 640 Hz when it is 300 m away from the crossing. The speed of sound in air is 340 m/s. What will be the
07
Sep
A train approaching a railway crossing at a speed of 120 km/h sounds a short whistle at frequency 640 Hz when it is 300 m away from the crossing. The speed of sound in air is 340 m/s. What will be the A train approaching a railway crossing at a speed of 120 km/h sounds [...]
A source of frequency f is moving along line with a constant velocity vs and observer is separated from the line of motion of the source as shown in figure. Plot apparent frequency observed by the observer versus time graph.
07
Sep
A source of frequency f is moving along line with a constant velocity vs and observer is separated from the line of motion of the source as shown in figure. Plot apparent frequency observed by the observer versus time graph. Two trains A and B simultaneously start moving along parallel tracks from a station along [...]
Two trains A and B simultaneously start moving along parallel tracks from a station along same direction. A starts with constant acceleration 2 m/s^2 from rest, while B with the same acceleration but with initial velocity of 40 m/s.
07
Sep
Two trains A and B simultaneously start moving along parallel tracks from a station along same direction. A starts with constant acceleration 2 m/s^2 from rest, while B with the same acceleration but with initial velocity of 40 m/s. Two trains A and B simultaneously start moving along parallel tracks from a station along same [...]
A source of sonic oscillations with frequency n = 1700 Hz and a receiver are located on the same normal to a wall. Both the source and receiver are stationary, and the wall recedes from the source with velocity u = 6
07
Sep
A source of sonic oscillations with frequency n = 1700 Hz and a receiver are located on the same normal to a wall. Both the source and receiver are stationary, and the wall recedes from the source with velocity u = 6 A source of sonic oscillations with frequency n = 1700 Hz and a [...]
A band playing music at a frequency f is moving towards a wall at a speed vb. A motorist is following the band with a speed vm. If V is the speed of sound, obtain an expression for the beat frequency heard by the motorist.
07
Sep
A band playing music at a frequency f is moving towards a wall at a speed vb. A motorist is following the band with a speed vm. If V is the speed of sound, obtain an expression for the beat frequency heard by the motorist. A band playing music at a frequency f is moving [...]