Physics-Objective Related Question Answers
226. Colour at bottom of a rainbow is?
Violet
227. Colour at centre of a rainbow is?
Green
228. The phenomenon that occurs when two waves meet while travelling along the same medium?
Interference
229. Interference was observed first by?
Thomas Young
230. Different colour of the soap foam is due to?
Interference of light
231. Oil spread in water glitters due to?
Interference of light
232. The bending of light around the corners of an obstacle or aperture into the region of geometrical shadow of the obstacle is called?
Diffraction
233. The fuzzy uneven edges of shadow can be explained by?
Diffraction of light
234. Principle behind the working of projector in a film theatre can be explained by?
Diffraction of light
235. Fringes pattern in CD can be explained by?
Diffraction of light
236. The reflection of a ray from a straight path due to particles, or in the interface between two media is called?
Scattering of Light
237. Reddening of sun at sunrise and sunset shadow can be explained by?
Scattering of light
238. The blue colour of the sky and sea can be explained with?
Scattering of light
239. Colour lamp used in fog for vehicles is?
Yellow light
240. On moon, sky appears black colour due to the absence of?
Scattering of light
241. The scientist who first explained the blue colour of the sky is?
Rayleigh
242. The scientist who explained the blue colour of sea?
C.V.Raman
243. Scattering of light due to colloidal particle is termed as?
Tyndal effect
244. Which mirror is used as a shaving mirror?
Concave mirror
245. Which mirror is used as Reflector in solar cooker?
Concave mirror
246. Which mirror is used as Reflector in astronomical telescope?
Concave mirror
247. Which mirror is used as Searchlight and head light of automobiles?
Concave mirror
248. Which mirror is used as Used by dentists and ENT specialists?
Concave mirror
249. Which mirror is used as burning glass?
Concave mirror
250. Which mirror is used in torches?
Concave mirror
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