Home
Class 9
PHYSICS
The most efficient engine is...

The most efficient engine is

A

steam

B

electric

C

petrol

D

diesel

Text Solution

Verified by Experts

For the reflection of sound, the obstacle should be large in size compared to that for reflection of light.
Promotional Banner

Topper's Solved these Questions

  • SOUND

    KUMAR PRAKASHAN|Exercise QUESTIONS AND ANSWERS (Choose the correct option from those given below cach question:)|30 Videos

  • SOUND

    KUMAR PRAKASHAN|Exercise QUESTIONS AND ANSWERS (Fill in the blanks:)|9 Videos

  • SOUND

    KUMAR PRAKASHAN|Exercise INTEXT QUESTIONS AND ANSWERS|17 Videos

  • QUESTION PAPER 03

    KUMAR PRAKASHAN|Exercise SECTION -D|3 Videos

  • WORK AND ENERGY

    KUMAR PRAKASHAN|Exercise QUESTION & ANSWER (ADDITIONAL NUMERICALS FOR PRACTICE)|50 Videos

Similar Questions

Explore conceptually related problems

A diatomic ideal gas is used in a Carnot engine as the working substance. If during the adiabatic expansion part of the cycle the volume of the gas increase from V to 32V, the efficiency of the engine is

The efficiency of carnot engine working between temperatures 200^@ C and 0^@ C is eta_1 . The efficiency of this engine is eta_2 when it work between temperatures 0^@ C and -200^@ C . Then eta_1/eta_2 =_____

The efficiency of heat engines and refrigerators, the direction of physical and chemical process, etc., are also studied in …

A carnot engine converts one sixth of the heat input into work. The sink temperature is reduced by 62^@ C , the efficiency of engine gets doubled. Find the source and the sink temperature.

A steam engine delivers 5.4 xx 10^8 J of work per minute and services 3.6 xx 10^9 J of heat per minute from its boiler. What is the efficiency of the engine? How much heat is wasted per minute ?

The temperatures T_(1) and T(2) of two heat reservoirs in an ideal carnot engine are 1500^(@)C and 500^(@)C . Which of these (a) increasing T_(1) by 100^(@)C or (b) decreasing T_(2) by 100^(@)C would result in greater improvement of the efficiency of the engine?

What is theoretical efficiency of heat engine ?

The temperature of the sink of a carnot engine is 300 K and its efficiency is 40 %. Find the decrease in temperature of the sink required to increase the efficiency of the engine to 50% keeping temperature of the source to be constant.