a2zinterviews

5.	The rear view of a mirror vehicles is
	A.  Plane
	B.  Triconcave
	C.  Concave
	D.  Convex

Answer

Ans: D Convex

6.	Who invented the laser?
	A.  Seymour Cray
	B.  Charles H. Townes
	C.  Sir Frank Whittle
	D.  Fred Morrisson

Answer

Ans: B Charles H. Townes

7.	Rocket operates (works) on the principle of
	A.  Energy conservation
	B.  Momentum conservation
	C.  Avogadro's concept
	D.  Bernoulli's theorem

Answer

Ans: B Momentum conservation

8.	The antiparticle of the electron is called as
	A.  Meson
	B.  Neutrino
	C.  Antineutrino
	D.  Positron

Answer

Ans: D Positron