The ray falling on mirror is called………
a) incident ray
b) reflected
c) normal ray
d) none of these
Following are non-luminous object
1) ……….2) ………..3) ………..
PST –P-3---(date not confirm)
a) Earth, candle, Moon
b) Earth, Moon, lighted bulb
c) Earth, Moon, electric iron
d) Earth, Moon, electric tube light
Sun is good Example of…………………
a) Luminous object
b) Non-Luminous
c) Transparent
d) Opaque
Collection of rays is called… NTS PST –P-2----18 L
a) light
b) Beam
c) stream
d) shadow
A simple periscope can be constructed by
using ……plane mirrors at……….. in a tube.
a) 2, 75o
b) 2, 45o
c) 3, 90o
d) 3, 120o
The light ray coming from an object hit the surface of the first mirror of periscope and reflect making a bend of……..
a) 90o
b) 45o
c) 70o
d) 60o
