A science teacher labelled three glass slides as P, Q and R. She painted slide Q with light blue colour, slide R with black colour and slide P was left as such.
Then she asked students to put the slide on a white paper having (X) mark on it.
Students will be able to see the mark clearly (or partially)
A In slide P as it is translucent
B In slide Q as it is translucent
C In slide R as it is opaque
D In all the slides as paint does not change the nature of glass.
It's written'Students will be able to see the mark clearly (or partially)'. What should I do the question is not even making up it's mind!