Physic : Light MCQ Set-4

MCQ Set-4 1. Which one of the following wavelengths of light is most effective in photosynthesis? a. Yellow b. Orange c. Blue d. Green 2. A person wears spectates with concave lenses. It means that normally (when not using glasses), the image of distant objects is focused in his eyes a. in front of the …

Physic : Light MCQ Set-3

MCQ Set-3 1. For a ray of light to suffer total internal reflection it has to pass from : a. glass to water b. air to glass c. water to glass d. air to water 2. The blue colour of water in the sea is due to a. reflection of blue sky by sea water …

Physic : Light MCQ Set-2

MCQ Set-2 1. Light beam which is highly directional is called: a. grazer b. maser c. laser d. eraser 2. A light year is a unit of a. time b. intensity of light c. distance d. speed of light 3. The speed of light in air is a. 3 x 108 m/s b. Infinity c. …

Physic : Light MCQ Set-1

MCQ Set-1 1. When a light wave is reflected from a mirror, there is a change in its a. Wavelength b.Velocity c. amplitude d. frequency 2. Optic fibres are used in.... a.Ultrasound scans b. CAT scans c. X-ray photos d. Endoscopy 3. In which one of the following the phenomenon of total internal reflection of …