NEET Last 32 Years Solved 1988 – 2019 Physics and Chemistry Video Solutions
Sahay Sir > Question Answers > NEET Last 32 Years Solved 1988 - 2019 Physics and Chemistry Video Solutions
The two ends of a metal rod are maintained at temperature 100 C and 110C. The rate of heat flow in the rod is found to be 4.0 J/s. If the ends are maintained at temperatures 200C and 210C, the rate of heat flow will be
31
Aug
The two ends of a metal rod are maintained at temperature 100 C and 110C. The rate of heat flow in the rod is found to be 4.0 J/s. If the ends are maintained at temperatures 200C and 210C, the rate of heat flow will be the rate of heat flow will be The two [...]
Liquid oxygen at 50 K is heated to 300 K at constant pressure of 1 atm. The rate of heating is constant. Which of the following graphs represents the variation of temperature with time?
31
Aug
Liquid oxygen at 50 K is heated to 300 K at constant pressure of 1 atm. The rate of heating is constant. Which of the following graphs represents the variation of temperature with time? Liquid oxygen at 50 K is heated to 300 K at constant pressure of 1 atm. The rate of heating is [...]
Steam at 100°C is passed into 20 g of water at 10°C. When water acquires a temperature of 80°C, the mass of water present will be [Take specific heat of water = 1 cal g^-1°C^-1 and latent heat of steam = 540 cal g^-1]
31
Aug
Steam at 100°C is passed into 20 g of water at 10°C. When water acquires a temperature of 80°C, the mass of water present will be [Take specific heat of water = 1 cal g^-1°C^-1 and latent heat of steam = 540 cal g^-1] Steam at 100°C is passed into 20 g of water at [...]
A piece of ice falls from a height h so that it melts completely. Only one-quarter of the heat produced is absorbed by the ice and all energy of ice gets converted into heat during its fall. The value of h is [Latent heat of ice is 3.4 × 10^5J/kg and g = 10N/kg]:
31
Aug
A piece of ice falls from a height h so that it melts completely. Only one-quarter of the heat produced is absorbed by the ice and all energy of ice gets converted into heat during its fall. The value of h is [Latent heat of ice is 3.4 × 10^5J/kg and g = 10N/kg]: A [...]
When a string is divided into three segments of lengths l1, l2, and l3, the fundamental frequencies of these three segments are v1,v2 and v3, respectively. The original fundamental frequency (v) of the string is
31
Aug
When a string is divided into three segments of lengths l1, l2, and l3, the fundamental frequencies of these three segments are v1,v2 and v3, respectively. The original fundamental frequency (v) of the string is and l3 l2 respectively. The original fundamental frequency (v) of the string is the fundamental frequencies of these three segments [...]
If n1,n2 and n3 are the fundamental frequencies of three segments into which a string is divided, then the original fundamental frequency n of the string is given by
31
Aug
If n1,n2 and n3 are the fundamental frequencies of three segments into which a string is divided, then the original fundamental frequency n of the string is given by If n1 n2 and n3 are the fundamental frequencies of three segments into which a string is divided then the original fundamental frequency n of the [...]
A string is stretched between fixed points separated by 75.0cm. It is observed to have resonant frequencies of 420 Hz and 315 Hz. There are no other resonant frequencies between these two. Then, the lowest resonant frequency for this string is
31
Aug
A string is stretched between fixed points separated by 75.0cm. It is observed to have resonant frequencies of 420 Hz and 315 Hz. There are no other resonant frequencies between these two. Then, the lowest resonant frequency for this string is A string is stretched between fixed points separated by 75.0cm. It is observed to [...]
A transverse wave propagating along x-axis is represented by: y (x,t) = 8.0sin (0.5 pix – 4 pit – (pi)/(4)) Where x is in metres and t is in seconds. The speed of the wave is:
31
Aug
A transverse wave propagating along x-axis is represented by: y (x,t) = 8.0sin (0.5 pix – 4 pit – (pi)/(4)) Where x is in metres and t is in seconds. The speed of the wave is: A transverse wave propagating along x-axis is represented by: y (x t) = 8.0sin (0.5 pix - 4 pit [...]
Sound waves travel at 350 m/s through a warm air and at 3500 m/s through brass. The wavelength of a 700 Hz acoustic wave as it enters brass from warm air.
31
Aug
Sound waves travel at 350 m/s through a warm air and at 3500 m/s through brass. The wavelength of a 700 Hz acoustic wave as it enters brass from warm air. Sound waves travel at 350 m/s through a warm air and at 3500 m/s through brass. The wavelength of a 700 Hz acoustic wave [...]
A tuning fork is used to produce resonance in a glass tube. The length of the air column in this tube can be adjusted by a variable piston. At room temperature of 27 C two successive resonances are produced at 20 cm and 73 cm of column length. If the frequency of the tuning fork is 320 Hz, the velocity of sound in air at 27 C is?
31
Aug
A tuning fork is used to produce resonance in a glass tube. The length of the air column in this tube can be adjusted by a variable piston. At room temperature of 27 C two successive resonances are produced at 20 cm and 73 cm of column length. If the frequency of the tuning fork [...]