In which medium, sound travels fastest?

Important Questions on Work, Power and Energy

EASY

CTET Paper 2

IMPORTANT

Science and Pedagogy CTET and TETs>Chapter 10 - Work, Power and Energy>CHAPTER EXERCISE>Q 34

"Energy can neither be created nor be destroyed", which law is this?

HARD

CTET Paper 2

IMPORTANT

Science and Pedagogy CTET and TETs>Chapter 10 - Work, Power and Energy>CHAPTER EXERCISE>Q 35

A porter lifts the luggage weighing $5 kg$ from the ground and puts on the head. Then, he stands still for some time. How much work he is doing while holding the luggage on his head and standing still?

EASY

CTET Paper 2

IMPORTANT

Science and Pedagogy CTET and TETs>Chapter 10 - Work, Power and Energy>CHAPTER EXERCISE>Q 36

In which mode, heat is transferred from one place to other by the actual motion of particles of the medium?

EASY

CTET Paper 2

IMPORTANT

Science and Pedagogy CTET and TETs>Chapter 10 - Work, Power and Energy>CHAPTER EXERCISE>Q 37

Which one is used for rearview in vehicles?

EASY

CTET Paper 2

IMPORTANT

Science and Pedagogy CTET and TETs>Chapter 10 - Work, Power and Energy>Previous Years' Questions>Q 38

An air bubble inside water behaves like a _____.

MEDIUM

CTET Paper 2

IMPORTANT

Science and Pedagogy CTET and TETs>Chapter 10 - Work, Power and Energy>Previous Years' Questions>Q 39

LED and CFL are very commonly used as sources of light in homes. Which of the following statements is true?

HARD

CTET Paper 2

IMPORTANT

Science and Pedagogy CTET and TETs>Chapter 10 - Work, Power and Energy>Previous Years' Questions>Q 40

A $1000 \mathrm{W}$ heater is used every day for $90$ minutes. This heater will consume units of electrical energy in $30$ days:

EASY

CTET Paper 2

IMPORTANT

Science and Pedagogy CTET and TETs>Chapter 10 - Work, Power and Energy>Previous Years' Questions>Q 41

Which part of the eye is adjustable in accordance with the light conditions?