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General
Easy
Question
A wave pulse on a string has the dimension shown in figure. The waves speed is v = 1 cm/s. If point O is a free end. The shape of wave at time t = 3 s is :
The correct answer is:
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physics-
A pulse shown here is reflected from the rigid wall A and then from free end B. The shape of the string after these 2 reflection will be
A pulse shown here is reflected from the rigid wall A and then from free end B. The shape of the string after these 2 reflection will be
physics-General
physics-
A block of mass 1 kg is hanging vertically from a string of length 1 m and mass/length = 0.001 Kg/m. A small pulse is generated at its lower end. The pulse reaches the top end in approximately
A block of mass 1 kg is hanging vertically from a string of length 1 m and mass/length = 0.001 Kg/m. A small pulse is generated at its lower end. The pulse reaches the top end in approximately
physics-General
physics-
Figure shown the shape of part of a long string in which transverse waves are produced by attaching one end of the string to tuning fork of frequency 250 Hz. What is the velocity of the waves?
Figure shown the shape of part of a long string in which transverse waves are produced by attaching one end of the string to tuning fork of frequency 250 Hz. What is the velocity of the waves?
physics-General
physics-
For two different gases X and Y, having degrees of freedom f1 and f2 and molar heat capacities at constant volume CV1 and CV2 respectively, the 
n P versus n V graph is plotted for adiabatic process, as shown
For two different gases X and Y, having degrees of freedom f1 and f2 and molar heat capacities at constant volume CV1 and CV2 respectively, the n P versus n V graph is plotted for adiabatic process, as shown
physics-General
physics-
A cyclic process ABCD is shown in the p-V diagram. Which of the following curves represents the same process if BC & DA are isothermal processes
A cyclic process ABCD is shown in the p-V diagram. Which of the following curves represents the same process if BC & DA are isothermal processes
physics-General
physics-
An enclosed ideal gas is taken through a cycle as shown in the figure. Then
An enclosed ideal gas is taken through a cycle as shown in the figure. Then
physics-General
physics-
A student records 
for a thermodynamic cycle 
. Certain entries are missing. Find correct entry in following options
A student records for a thermodynamic cycle . Certain entries are missing. Find correct entry in following options
physics-General
physics-
An ideal gas is taken from state 1 to state 2 through optional path A, B, C & D as shown in P-V diagram. Let Q, W and U represent the heat supplied, work done & internal energy of the gas respectively. Then
An ideal gas is taken from state 1 to state 2 through optional path A, B, C & D as shown in P-V diagram. Let Q, W and U represent the heat supplied, work done & internal energy of the gas respectively. Then
physics-General
physics-
Hydrogen gas and oxygen gas have volume 1 cm3 each at N.T.P
Hydrogen gas and oxygen gas have volume 1 cm3 each at N.T.P
physics-General
physics-
Figure shows the pressure P versus volume V graphs for two different gas sample at a given temperature. MA and MB are masses of two samples, nA and nB are numbers of moles. Which of the following must be incorrect
Figure shows the pressure P versus volume V graphs for two different gas sample at a given temperature. MA and MB are masses of two samples, nA and nB are numbers of moles. Which of the following must be incorrect
physics-General
physics-
A process is shown in the diagram. Which of the following curves may represent the same process?
A process is shown in the diagram. Which of the following curves may represent the same process?
physics-General
physics-
A resistance coil connected to an external battery is placed inside an adiabatic cylinder fitted with a frictionless piston and containing an ideal gas. A current i flows through the coil which has a resistance R. At what speed must the piston move upward in order that the temperature of the gas remains uchanged? Neglect atmospheric pressure
A resistance coil connected to an external battery is placed inside an adiabatic cylinder fitted with a frictionless piston and containing an ideal gas. A current i flows through the coil which has a resistance R. At what speed must the piston move upward in order that the temperature of the gas remains uchanged? Neglect atmospheric pressure
physics-General
physics-
Considered the thermodynamics cycle shown on PV diagram. The process 
is isobaric, 
is isochoric and 
is a straight line process. The following internal energy and heat are given : 
The heat flow in the process 
is :
Considered the thermodynamics cycle shown on PV diagram. The process is isobaric, is isochoric and is a straight line process. The following internal energy and heat are given : The heat flow in the process is :
physics-General
physics-
A cyclic process ABCA is shown in PT diagram. When presented on PV, it would
A cyclic process ABCA is shown in PT diagram. When presented on PV, it would
physics-General
physics-
An ideal gas undergoes a thermodynamics cycle as shown in figure. Which of the following graphs represents the same cycle?
An ideal gas undergoes a thermodynamics cycle as shown in figure. Which of the following graphs represents the same cycle?
physics-General
