Physics-
General
Easy

Question

The ratio of powers dissipatted respectively in R and 3R, as shown is:

  1. 9    
  2. 27/4    
  3. 4/9    
  4. 4/27    

The correct answer is: 4/27

Related Questions to study

General
physics-

A person standing at a distance of 6 m from a source of sound receives sound wave in two ways, one directly from the source and other after reflection from a rigid boundary as shown in the figure. The maximum wavelength for which, the person will receive maximum sound intensity, is

A person standing at a distance of 6 m from a source of sound receives sound wave in two ways, one directly from the source and other after reflection from a rigid boundary as shown in the figure. The maximum wavelength for which, the person will receive maximum sound intensity, is

physics-General
General
physics-

A taut string at both ends vibrates in its nth overtone. The distance between adjacent Node and Antinode is found to be 'd'. If the length of the string is L, then

A taut string at both ends vibrates in its nth overtone. The distance between adjacent Node and Antinode is found to be 'd'. If the length of the string is L, then

physics-General
General
physics-

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 :

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 :

physics-General
parallel
General
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
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
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
parallel
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 ln P versus ln 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 ln P versus ln V graph is plotted for adiabatic process, as shown

physics-General
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
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
parallel
General
physics-

A student records capital delta Q comma capital delta U blank & blank capital delta W for a thermodynamic cycle A rightwards arrow B rightwards arrow C rightwards arrow A. Certain entries are missing. Find correct entry in following options

A student records capital delta Q comma capital delta U blank & blank capital delta W for a thermodynamic cycle A rightwards arrow B rightwards arrow C rightwards arrow A. Certain entries are missing. Find correct entry in following options

physics-General
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
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
parallel
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
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
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
parallel

card img

With Turito Academy.

card img

With Turito Foundation.

card img

Get an Expert Advice From Turito.

Turito Academy

card img

With Turito Academy.

Test Prep

card img

With Turito Foundation.