Neon gas is generally used in the sign boards. If it emits strongly at 617nm, calculate
Distance travelled by his radiation in 30s

Neon gas is generally used in the sign boards. If it emits strongly at 616nm, calculate The frequency of emission

Neon gas is generally used in the sign boards. If it emits strongly at 618nm, calculate energy of quantum and

Neon gas is generally used in the sign boards. If it emits strongly at 619nm, calculate number of quantum present if it produces 2J of energy.

The sound emitted from the siren of an ambulance has frequency of 1500 Hz. The speed of sound is 340 m//s . Calculate the difference in frequencies heard by a stationary observer in the ambulance initially, travels towards and then away from the observer at a speed of 30 m//s .