Physics-
General
Easy
Question
The attenuation in optical fibre is mainly due to
- Absorption
- Scattering
- Neither absorption nor scattering
- Both (A) and (B)
The correct answer is: Both (A) and (B)
Related Questions to study
physics-
The P-V diagram of 2 gm of helium gas for a certain process 
is shown in the figure. what is the heat given to the gas during the process
The P-V diagram of 2 gm of helium gas for a certain process is shown in the figure. what is the heat given to the gas during the process
physics-General
physics-
In the following P-V diagram two adiabatics cut two isothermals at temperatures T1 and T2 (fig.). The value of 
will be
In the following P-V diagram two adiabatics cut two isothermals at temperatures T1 and T2 (fig.). The value of will be
physics-General
physics-
A sample of an ideal gas is taken through a cycle a shown in figure. It absorbs 50J of energy during the process AB, no heat during BC, rejects 70J during CA. 40J of work is done on the gas during BC. Internal energy of gas at A is 1500J, the internal energy at C would be
A sample of an ideal gas is taken through a cycle a shown in figure. It absorbs 50J of energy during the process AB, no heat during BC, rejects 70J during CA. 40J of work is done on the gas during BC. Internal energy of gas at A is 1500J, the internal energy at C would be
physics-General
physics-
P-V diagram of a cyclic process ABCA is as shown in figure. Choose the correct statement
P-V diagram of a cyclic process ABCA is as shown in figure. Choose the correct statement
physics-General
physics-
In the following figure, four curves A, B, C and D are shown. The curves are
In the following figure, four curves A, B, C and D are shown. The curves are
physics-General
physics-
Six moles of an ideal gas perfomrs a cycle shown in figure. If the temperature are TA = 600 K, TB = 800 K, TC = 2200 K and TD = 1200 K, the work done per cycle is
Six moles of an ideal gas perfomrs a cycle shown in figure. If the temperature are TA = 600 K, TB = 800 K, TC = 2200 K and TD = 1200 K, the work done per cycle is
physics-General
physics-
Four co-planar concurrent forces are acting on a body as shown in the figure to keep it in. equilibrium. Then the values of P and q are
Four co-planar concurrent forces are acting on a body as shown in the figure to keep it in. equilibrium. Then the values of P and q are
physics-General
physics-
Consider a process shown in the figure. During this process the work done by the system
Consider a process shown in the figure. During this process the work done by the system
physics-General
physics-
The P-V diagram of a system undergoing thermodynamic transformation is shown in figure. The work done by the system in going from 
is 30J and 40J heat is given to the system. The change in internal energy between A and C is
The P-V diagram of a system undergoing thermodynamic transformation is shown in figure. The work done by the system in going from is 30J and 40J heat is given to the system. The change in internal energy between A and C is
physics-General
physics-
An ideal gas is taken from point A to the point B, as shown in the P-V diagram, keeping the temperature constant. The work done in the process is
An ideal gas is taken from point A to the point B, as shown in the P-V diagram, keeping the temperature constant. The work done in the process is
physics-General
physics-
An ideal gas is taken around ABCA as shown in the above P-V diagram. The work done during a cycle is
An ideal gas is taken around ABCA as shown in the above P-V diagram. The work done during a cycle is
physics-General
physics-
For one complete cycle of a thermodynamic process on a gas as shown in the P-V diagram, Which of following is correct
For one complete cycle of a thermodynamic process on a gas as shown in the P-V diagram, Which of following is correct
physics-General
physics-
When a system is taken from state i to a state f along path if, 
and 
Along path ibf, 
If 
for the curved return path f i, Q for this path is
When a system is taken from state i to a state f along path if, and Along path ibf, If for the curved return path f i, Q for this path is
physics-General
physics-
A sample of ideal monoatomic gas is taken round the cycle ABCA as shown in the figure. The work done during the cycle is
A sample of ideal monoatomic gas is taken round the cycle ABCA as shown in the figure. The work done during the cycle is
physics-General
physics-
Carbon monoxide is carried around a closed cycle abc in which bc is an isothermal process as shown in the figure. The gas absorbs 7000 J of heat as its temperature increases from 300 K to 1000 K in going from a to b. The quantity of heat rejected by the gas during the process ca is
Carbon monoxide is carried around a closed cycle abc in which bc is an isothermal process as shown in the figure. The gas absorbs 7000 J of heat as its temperature increases from 300 K to 1000 K in going from a to b. The quantity of heat rejected by the gas during the process ca is
physics-General
