List of top Science and Technology Questions on Light asked in Maharashtra Class X Board

What is the wavelength of violet ray in dispersion of light?

चूक की बरोबर ते लिहा : 
तांबड्या किरणांची तरंगलांबी 700 nm च्या जवळ आहे. 
 

State True or False: "Wavelength of red light is close to \( 700 \text{ nm} \)."