Question Answers
Sahay Sir > Question Answers
A taut string having tension 100 N and linear mass density 0.25 kg/m is used inside a cart to generate a wave pulse starting at the left end as shown. What should be the velocity of the cart so that the pulse remains stationary w.r.t. the ground?Assume x axis to be along horizontal direction
12
Nov
A taut string having tension 100 N and linear mass density 0.25 kg/m is used inside a cart to generate a wave pulse starting at the left end as shown. What should be the velocity of the cart so that the pulse remains stationary w.r.t. the ground?Assume x axis to be along horizontal direction The [...]
A string with linear mass density mew =4.9×10−2 kg/m is under a tension of 63.5 N. How much power must be supplied to the string to generate sinusoidal waves at a frequency of 40.0 Hz and an amplitude of 6 cm?
12
Nov
A string with linear mass density mew =4.9×10−2 kg/m is under a tension of 63.5 N. How much power must be supplied to the string to generate sinusoidal waves at a frequency of 40.0 Hz and an amplitude of 6 cm? The temperature at which the speed of sound in air becomes double of its [...]
Which of the following process is used in the extractive metallurgy of magnisium (a) Fused salt electrolysis (b) Self reduction (c) Aqueous solution electrolysis
12
Nov
Which of the following process is used in the extractive metallurgy of magnisium (a) Fused salt electrolysis (b) Self reduction (c) Aqueous solution electrolysis Which of the following process is used in the extractive metallurgy of magnisium (a) Fused salt electrolysis (b) Self reduction (c) Aqueous solution electrolysis November 12, 2020 Category: Uncategorised (JEE Advanced [...]
Electrolyte reduction of alumina to aluminium by Hall-Heroult process is carried out (a) In the presence of NaCl (b) In the presence of fluorite
12
Nov
Electrolyte reduction of alumina to aluminium by Hall-Heroult process is carried out (a) In the presence of NaCl (b) In the presence of fluorite Electrolyte reduction of alumina to aluminium by Hall-Heroult process is carried out (a) In the presence of NaCl (b) In the presence of fluorite November 12, 2020 Category: Uncategorised (JEE Advanced [...]
An object of specific gravity p is hung from a thin steel wire. The wave velocity of transverse waves in the wire is 2m/s.If the object is immersed in water so that one half of its volume is submerged.Find the new wave velocity
12
Nov
An object of specific gravity p is hung from a thin steel wire. The wave velocity of transverse waves in the wire is 2m/s.If the object is immersed in water so that one half of its volume is submerged.Find the new wave velocity The temperature at which the speed of sound in air becomes double [...]
Among the following statements, the incorrect one is (a) Calamine and siderite and carbonates (b) Argentite and cuprite are oxides (c) Zinc blende and pyrites are sulplhides
12
Nov
Among the following statements, the incorrect one is (a) Calamine and siderite and carbonates (b) Argentite and cuprite are oxides (c) Zinc blende and pyrites are sulplhides Among the following statements the incorrect one is (a) Calamine and siderite and carbonates (b) Argentite and cuprite are oxides (c) Zinc blende and pyrites are sulplhides November [...]
A transverse wave of aplitude 0.750 m,wavelength 0.5 m and frequency 1Hz is propagating on a string in the negative x-direction .The expression of the wave is
12
Nov
A transverse wave of aplitude 0.750 m,wavelength 0.5 m and frequency 1Hz is propagating on a string in the negative x-direction .The expression of the wave is A transverse wave of aplitude 0.750 m wavelength 0.5 m and frequency 1Hz is propagating on a string in the negative x-direction .The expression of the wave is [...]
Which of the following mineral does not contain Al (a) Cryolite (b) Mica (c) Feldspar (d) Fluorspar
12
Nov
Which of the following mineral does not contain Al (a) Cryolite (b) Mica (c) Feldspar (d) Fluorspar Which of the following mineral does not contain Al (a) Cryolite (b) Mica (c) Feldspar (d) Fluorspar November 12, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
The metallic lustre exhibited by sodium is explained by (a) Diffusion of sodium ions (b) Oscillations of loose electrons (c) Excitation of free proton
12
Nov
The metallic lustre exhibited by sodium is explained by (a) Diffusion of sodium ions (b) Oscillations of loose electrons (c) Excitation of free proton The metallic lustre exhibited by sodium is explained by (a) Diffusion of sodium ions (b) Oscillations of loose electrons (c) Excitation of free proton November 12, 2020 Category: Uncategorised (JEE Advanced [...]
In the aluminothermite process, aluminium acts as (a) An oxidizing agent (b) A flux (c) A reducing agent (d) A solder
12
Nov
In the aluminothermite process, aluminium acts as (a) An oxidizing agent (b) A flux (c) A reducing agent (d) A solder aluminium acts as (a) An oxidizing agent (b) A flux (c) A reducing agent (d) A solder In the aluminothermite process November 12, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP [...]