KERALA PSC STUDY NOTES -PHYSICS (PART-3)

    KERALA PSC STUDY NOTES -PHYSICS (PART-3)

          



         KERALA PSC STUDY NOTES -PHYSICS (PART-3)









OPTICAL FIBER CABLES WORK ON THE PRINCIPLE OF ?

ANS:TOTAL INTERNAL REFLECTION

SPARKING OF A DIAMOND IS DUE TO?

ANS:TOTAL INTERNAL REFLECTION

THE RAINBOW COLOURS REFLECTED FROM A COMPACT DISC IS DUE TO?

ANS:DIFFRACTION

RINGS AROUND THE SUN IS DUE TO ?

ANS:DIFFRACTION

BLUE  COLOUR OF SKY WAS EXPLAINED BY?

ANS:LORD RAYLIEGH

NUMBER OF COLOUR IN VISIBLE LIGHT?

ANS:7

PRIMARY COLOURS?

ANS:RED,BLUE, GREEN

SECONDARY COLOURS?

ANS:YELLOW, MAGENTA, CYAN

PRIMARY COLOURS USED IN COLOUR TELEVISION?

ANS:RED,BLUE, GREEN

PRIMARY COLOUR PIGMENTS USED IN PRINTING?

ANS:YELLOW, MAGENTA, CYAN

COLOURS OBTAINED BY MIXING ANY TWO PRIMARY COLOURS ?

ANS:SECONDARY COLOURS

GREEN+RED?

ANS:YELLOW

BLUE+RED?

ANS:MAGENTA

GREEN+BLUE?

ANS:CYAN

COMPLEMENTARY COLOURS?

ANS:GREEN+MAGENTA=WHITE
          RED+CYAN=WHITE
          BLUE+YELLOW=WHITE

BLUE COLOUR OF SEA WATER IS EXPLAINED BY?

ANS:C.V.RAMAN

LIGHT THAT SCATTERS MOST?

ANS:VIOLET

LIGHT THAT SCATTERS LEAST?

ANS:RED

THE COLOUR OF SKY IN MOON?

ANS:BLACK

THE COLOUR OF GREEN LEAF IN RED LIGHT?

ANS:BLACK

COLOUR  WHICH IS VERY SENSITIVE TO HUMAN EYE?

ANS:YELLOW

COLOUR WHICH IS USED IN DANGER SIGNAL?

ANS:RED

COLOUR USED IN SCIENTIFIC LABORATORY FOR INDICATING DANGER?

ANS:YELLOW

PHOTO ELECTRIC EFFECT WAS DISCOVERED BY?

ANS:HENRICH HERTZ


THE LENS IN HUMAN EYE?

ANS:CONVEX LENS

IMAGE FORMED IN CONVEX LENS?

ANS:REAL AND INVERTED

IMAGE FORMED IN CONCAVE LENS?

ANS:VIRTUAL AND ERECT

LENS USED AS MAGNIFYING GLASS?

ANS:CONVEX LENS

MIRROR USED IN SOLAR COOKER?

ANS:CONCAVE MIRROR

MIRROR USED IN REARVIEW MIRRORS IN VECHICLES?

ANS:CONVEX MIRRORS

LENS USED IN CAR HEAD LIGHT BULB?

ANS:CONCAVE LENS 

MIRROR USED AS SHAVING MIRRORS?

ANS:CONCAVE MIRRORS

SHORT SIGHT LONG SIGHT CAN BE CORRECTED TOGETHER BY?

ANS:BIFOCAL LENS 

BIFOCAL LENS WAS INVENTED BY ?

ANS:BENJAMIN FRANKLIN

  KERALA PSC STUDY NOTES -PHYSICS (PART-3)