light and shadows assertion reasoning

A: shadows form when light falls on a wooden block

R: Wood is an opaque object

• both a and r are true and r is the correct explanation of a

• both a and r are true and r is not the correct explanation of a

• a is true and r is false

• a is false and r is true

A: butter paper acts as translucent medium of light

R: Translucent materials allow the passage of light only partially

• both a and r are true and r is the correct explanation of a

• both a and r are true and r is not the correct explanation of a

• a is false and r is true

• both a and r are false

A: light travels in a straight line

R: transparent objects allows the passage of light through them

• both a and r are true and r is the correct explanation of a

• both a and r are true and r is not the correct explanation of a

• a is true and r is false

• a is false and r is true

A: shadows are dark in colour

R: no light reaches the place where shadows are formed

• both a and r are true and r is the correct explanation of a

• both a and r are true and r is not the correct explanation of a

• a is true and r is false

• a is false and r is true

Compare an eclipse to a shadow?

Define and explain rectilinear propagation of light