Ultra-violet light causes

Assertion : Ultra-violet light is used to achieve high resolving power. Reason: Resolving power of microscope increases with the decrease of wavelength of light used.

Assertion: Electrons are ejected from a certain metal when either blue or violet light strikes the metal surface. However only violet light cause electron ejection from a second metal. Reason: The electrons in the first metal requires less energy for ejection.

Assertion: Electrons are ejected from a certain metal when either blue or violet light strikes the metal surface. However only violet light cause electron ejection from a second metal. Reason: The electrons in the first metal requires less energy for ejection.

On mixing an alkane with chlorine and irradiating with ultra -violet light, it forms only one-mono-chloro-alkane. The alkane is

A ultra violet light bulb, emitting 400 nm and infrared bulb emitting 700 nm wavelength radiation each are rated at 130 W. Then the ratio of the number of photons emitted per second by the UV & IR sources :-

On mixing an alkane with chlorine and irradiating with ultra violet light, it forms only one monochloro alkane. The alkane is

What is the wave length of ultra violet light of v=5.5xx10^(15)s^(-1) ?