Questions

Why is digital wellbeing necessary? Mention any two points.

Mention any two causes of climate change.

Write any two characteristics of drone bee.

A lens can form real and magnified image of the object kept in between F and 2F of it. Mention the type of defect of vision which can be removed by using such lenses.

A student has faced difficulty to read letters of book at a normal distance due to defects of vision. How is the defect removed by the use of spectacles? Show it with ray diagram only.

What type of offsprings will be formed in first filial generation when black (Bb) and brown(bb) rabbits are crossed?

Detergent is considered more efficient than soap in laundry, why?

Why is catalyst used in chemical reaction?

For what purpose is digital signal changed into analogue signal?

Why is carbon dioxide gas considered as acidic gas?