Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions)
A train is moving at 30m/s in still air. The frequency of the locomotive whistle is 500Hz and the speed of sound is 345m/s. The apparent wavelengths of sound in front of and behind the locomotive are respectively
07
Dec
A train is moving at 30m/s in still air. The frequency of the locomotive whistle is 500Hz and the speed of sound is 345m/s. The apparent wavelengths of sound in front of and behind the locomotive are respectively because Many elements have non-integral atomic masses December 7, 2020 Category: Uncategorised (JEE Advanced Physics by BM [...]
The difference between the apparent frequency of a source of sound as perceived by the observer during its approach and recession is 2% of the actual frequency of the source. If the speed of the sound in air is 300m/s, the speed of the source is :
07
Dec
The difference between the apparent frequency of a source of sound as perceived by the observer during its approach and recession is 2% of the actual frequency of the source. If the speed of the sound in air is 300m/s, the speed of the source is : because Many elements have non-integral atomic masses December [...]
A tuning fork of frequency 90Hz is sounded and moved towards an observer with a speed equal to one – tenth the speed of sound. The note heard by the observer will have a frequency
07
Dec
A tuning fork of frequency 90Hz is sounded and moved towards an observer with a speed equal to one – tenth the speed of sound. The note heard by the observer will have a frequency A tuning fork of frequency 90Hz is sounded and moved towards an observer with a speed equal to one - [...]
A source of sound is travelling towards a stationary observer. The frequency of sound heard by the observer is 25% more than the actual frequency. If the speed of sound is v, that of the source is
07
Dec
A source of sound is travelling towards a stationary observer. The frequency of sound heard by the observer is 25% more than the actual frequency. If the speed of sound is v, that of the source is A source of sound is travelling towards a stationary observer. The frequency of sound heard by the observer [...]
A listener is at rest with respect to the source of sound. A wind starts blowing along the line joining the source and the observer. Which of the following quantities do not change? (i) Frequency (ii) Velocity of sound (iii) Wavelength (iv) Time period
07
Dec
A listener is at rest with respect to the source of sound. A wind starts blowing along the line joining the source and the observer. Which of the following quantities do not change? (i) Frequency (ii) Velocity of sound (iii) Wavelength (iv) Time period because Many elements have non-integral atomic masses December 7, 2020 Category: [...]
The valency of carbon is four. On what principle it can be explained in a better way (a) Resonance (b) Hybridization (c) electron transfer (d) None of the above
07
Dec
The valency of carbon is four. On what principle it can be explained in a better way (a) Resonance (b) Hybridization (c) electron transfer (d) None of the above The valency of carbon is four. On what principle it can be explained in a better way (a) Resonance (b) Hybridization (c) electron transfer (d) None [...]
As compared to pure atomic orbitals , hybrid orbitals have (a) low energy (b) same energy (c) high energy (d) none of these
07
Dec
As compared to pure atomic orbitals , hybrid orbitals have (a) low energy (b) same energy (c) high energy (d) none of these As compared to pure atomic orbitals hybrid orbitals have (a) low energy (b) same energy (c) high energy (d) none of these December 7, 2020 Category: Uncategorised (JEE Advanced Physics by BM [...]
The electronic structure of molecule OF2 is a hybrid of (a) sp (b) sp^^2 (c) sp^3 (d) sd^3
07
Dec
The electronic structure of molecule OF2 is a hybrid of (a) sp (b) sp^^2 (c) sp^3 (d) sd^3 The electronic structure of molecule OF2 is a hybrid of (a) sp (b) sp^^2 (c) sp^3 (d) sd^3 December 7, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
A small source of sound moves on a circle as shown in the figure and an observer is sitting at O. Let f1, f2 and f3 be the frequencies heard when the source is at A, B and C respectively.
07
Dec
A small source of sound moves on a circle as shown in the figure and an observer is sitting at O. Let f1, f2 and f3 be the frequencies heard when the source is at A, B and C respectively. A small source of sound moves on a circle as shown in the figure and [...]
A particle oscillating under a force F→=−kx→−bv→ is a (k and b are constants)
07
Dec
A particle oscillating under a force F→=−kx→−bv→ is a (k and b are constants) A particle oscillating under a force F→=−kx→−bv→ is a (k and b are constants) December 7, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,