a2zinterviews

17.	Einstein got noble prize for
	A.  Photo electric effect
	B.  Compton effect
	C.  Theory of relativity
	D.  None of the above

Answer

Ans: A Photo electric effect

18.	Night vision cameras do not use
	A.  Infrared sensors
	B.  Amplified light
	C.  X ray radiation from objects
	D.  Heat radiation from objects

Answer

Ans: C X ray radiation from objects

19.	Which one of the following is the weakest force?
	A.  Electrostatic force
	B.  Gravitational force
	C.  Nuclear force
	D.  Electromagnetic force

Answer

Ans: B Gravitational force

20.	Which of the following are the discoveries of Albert Einstein?
	A.  Radioactivity and photoelectric effect
	B.  X-rays and photoelectric effect
	C.  Radioactivity and theory of relativity
	D.  Theory of relativity and photoelectric effect

Answer

Ans: D Theory of relativity and photoelectric effect