Questions

The photoelectric effect pointed to the particle properties of light, which had been considered to be a wave phenomenon. Particles like electron and protons have both particle like and wave like behavior. Thus, according to de Broglie, all the material particles in motion possess wave characteristics. Although the dual nature of matter is applicable to all material objects but it is significant for microscopic bodies only.

The Theme of National Press Day 2017 is "Challenges before media".

Indian radio programme 'Mann Ki Baat' was officially launched on 3rd October, 2014.

The world's most valuable company is Apple followed by Amazon and Microsoft.

Himachal Pradesh state became 1st to launch a pan-India single emergency no. 112 where all kinds of immediate help can be sought in urgent matters.

Under this project, an Emergency Response Centre (ERC) has been established in Shimla along with 12 district command centres (DCCs), covering the entire state. The ERC has been integrated with police (100), fire (101), health (108) and women (1090) helpline numbers to provide emergency services through the emergency number '112'.

The 106th Indian Science Congress 2019 will held in Lovely Professional University in Jalandhar, Punjab from 3rd January 2019 to 7th January 2019. PM Narendra Modi is going to inaugarate this.