Math
Is -10/-123 a Rational Number?
Yes
What is light made of?
Photons
Convert -513/ -66 into it's standard form
171/11
Time taken for light to travel from sun to earth is
8 minutes 20 seconds.
Optics
What numbers can be a rational number?
Fractions (without q as 0), Decimals (Terminating and repeating), Ratios, Integers, Whole numbers and Natural numbers.
Luminous Objects
Objects that can produce light by itself
We find them by simply finding the HCF of the p and q then multiplying or dividing them.
Non-Luminous Objects
Objects that can't produce light by themselves and needs a luminous object to reflect on.
Convert -85/-90
17/18
Where do you use integers?
Temperature and Depth of the ocean.
Rectilinear Propagation
Light travelling through a straight line.
-90/42= ?/-77
-165
Lenses and telescopes use?
Refraction
T or F- Light can be used differently according to the object.
True
What are Rational Numbers?
Numbers that can be expressed in the form of p/q where p and q are integers and q is not equal to 0
Dispersion
When light falls on a glass object/ prism, emitting 7 different colors
Name some decimals that are irrational.
Non-terminating and Non-repeating
Diffraction
The bending of light around the edges of an obstacle.
Simplify 68/119
4/7
Name the rules of converting to a standard form
Denominator can't be negative, always simplify and when both p and q are negative, simplify to positive.
Shadow
Region of absence of light
Express -192/108 to standard form
-16/9
Image
Formed due to reflection by mirrors
Lateral Inversion
Phenomenon of changing left to right