a2zinterviews

5.	The apparatus used to measure the intensity of light is known as
	A.  Anemometer
	B.  Colorimeter
	C.  Altimeter
	D.  Lux meter

Answer

Ans: D Lux meter

6.	Optical fibre works on the principle of
	A.  Refraction
	B.  Scattering
	C.  Interference
	D.  Total internal reflection

Answer

Ans: D Total internal reflection

7.	The mirror used by a dentist to examine the teeth of patients is
	A.  Convex
	B.  Concave
	C.  Cylindrical
	D.  Plane

Answer

Ans: B Concave

8.	Electron beam therapy is a kind of radiation therapy to treat
	A.  Gall bladder stones
	B.  Certain types of cancer
	C.  Kidney stones
	D.  Enlarged prostate gland

Answer

Ans: B Certain types of cancer