Tocopherol is the chemical name of which vitamin?

Retinol is the chemical name of?

A. Vitamin A
B. Vitamin B
C. Vitamin C
D. Vitamin K

A train goes past a railway station at a high speed. A young boy standing on the edge of the platform is likely to __________?

A. Remain unaffected
B. Fall away from the train
C. Fall towards the train
D. Fall away from or towards the train depending upon the speed

Lunar eclipse occurs on__________?A. New Moon
B. Full Moon 
C. Half Moon
D. Quarter Moon

 

For seeing objects at the surface of water from a submarine under water, the instrument used is ________?

A. Periscope
B. Telescope
C. Kaleidoscope
D. Spectroscope

The Reason for a Swimming Pool to appear Less Deep than the actual depth is__________?A. Refraction
B. Light scattering
C. Reflection
D. Interference

A pool of water appears to be less deep than it actually is because light rays from bottom of pool are bent away from the normal as they pass from water into the air. This makes the pool appear shallower than it really is.

Because of the refraction of light.
Refection of Light:Refraction is the bending of light as it passes from one transparent substance into another.Light refracts whenever it travels at an angle into substance with a different refractive index.
Refraction is the bending of a wave when it enters a medium where its speed is different. The refraction of light when it passes from a fast medium to a slow medium bends the light ray toward the normal to the boundary between the two media.