NCERT Exemplar Class 11
If travelling at same speeds, which of the following matter waves have the shortest wavelength?
12
Nov
If travelling at same speeds, which of the following matter waves have the shortest wavelength? If travelling at same speeds which of the following matter waves have the shortest wavelength? November 12, 2020 Category: Chapter 2 - Atomic Structure , Chemistry , NCERT Exemplar Class 11 ,
A steel wire has a length of 12 m and a mass of 2.10 kg. What will be the speed of a transverse wave on this wire when a tension of 2.06 × 10^4N is applied?
12
Nov
A steel wire has a length of 12 m and a mass of 2.10 kg. What will be the speed of a transverse wave on this wire when a tension of 2.06 × 10^4N is applied? A steel wire has a length of 12 m and a mass of 2.10 kg. What will be the [...]
When two waves of almost equal frequency n1 and n2 are produced simultaneously. What is the times interval between successive maxima ?
12
Nov
When two waves of almost equal frequency n1 and n2 are produced simultaneously. What is the times interval between successive maxima ? When two waves of almost equal frequency n1 and n2 are produced simultaneously. What is the times interval between successive maxima ? November 12, 2020 Category: Chapter 14 - Waves , [...]
At what temperature will the speed of sound in air be 3 times its value at 0^o C?
12
Nov
At what temperature will the speed of sound in air be 3 times its value at 0^o C? At what temperature will the speed of sound in air be 3 times its value at 0^o C? November 12, 2020 Category: Chapter 14 - Waves , NCERT Exemplar Class 11 , Physics ,
A sitar wire is replaced by another wire of same length and material but of three times the earlier radius. If the tension in the wire remains the same, by what factor will the frequency change ?
12
Nov
A sitar wire is replaced by another wire of same length and material but of three times the earlier radius. If the tension in the wire remains the same, by what factor will the frequency change ? A sitar wire is replaced by another wire of same length and material but of three times the [...]
The displacement of an elastic wave is given by the function y=3sinωt+4cosωt. where y is in cm and t is in second. Calculate the resultant amplitude.
12
Nov
The displacement of an elastic wave is given by the function y=3sinωt+4cosωt. where y is in cm and t is in second. Calculate the resultant amplitude. The displacement of an elastic wave is given by the function y=3sinωt+4cosωt. where y is in cm and t is in second. Calculate the resultant amplitude. November 12, 2020 [...]
A tuning fork A, marked 512 Hz, produces 5 beats per second, when sounded with another unmarked tuning fork B. If B is loaded with wax, the number of beats is again 5 per second. What is the frequency of tuning fork B when not loaded?
12
Nov
A tuning fork A, marked 512 Hz, produces 5 beats per second, when sounded with another unmarked tuning fork B. If B is loaded with wax, the number of beats is again 5 per second. What is the frequency of tuning fork B when not loaded? A tuning fork A marked 512 Hz produces 5 [...]
For the electrons of oxygen atom, which of the following statements is correct ? (a) Zeff for an electron in a 2s orbital is the same as Zeff for an electron in a 2p orbital (b) An electron in the 2s orbital has the same energy as an electron in the 2p orbital (c) Zeff for electron in 1s orbital is the same Zeff for an electron in a 2s orbital (d) The two electrons present in the 2s orbital have spin quantum number ms but of opposite sign
12
Nov
For the electrons of oxygen atom, which of the following statements is correct ? (a) Zeff for an electron in a 2s orbital is the same as Zeff for an electron in a 2p orbital (b) An electron in the 2s orbital has the same energy as an electron in the 2p orbital (c) Zeff [...]
An organ pipe of length L open at both ends is found to vibrate in its harmonic when sounded with a tuning fork of 480Hz. What should be the length of a pipe closed at one end, so that it also vibrates in its first harmonic with the same tuning fork?
12
Nov
An organ pipe of length L open at both ends is found to vibrate in its harmonic when sounded with a tuning fork of 480Hz. What should be the length of a pipe closed at one end, so that it also vibrates in its first harmonic with the same tuning fork? An organ pipe of [...]
A sonometer wire is vibrating is resonance with a tuning fork. Keeping the tension applied same, the length of the wire is doubled. Under what conditions would the tuning fork still be in resonance with the wire?
12
Nov
A sonometer wire is vibrating is resonance with a tuning fork. Keeping the tension applied same, the length of the wire is doubled. Under what conditions would the tuning fork still be in resonance with the wire? A sonometer wire is vibrating is resonance with a tuning fork. Keeping the tension applied same the length [...]