Class 10

Which device is used to calculate th value of G?

• Beam balance

• Thermometer

• Torsion balance

• Physical balance

Who determined the value of universal Gravitational constant?

• Sir Issac Newton

• Henry Cavendish

• Robert Boyle

• Gallelio

What is the value of acceleration due gravity at poles of earth?

• 9.8m/s²

• 9.78m/s²

• 9.83m/s²

• 10m/s²

What is the acceleration of falling parasuit?

• 0m/s²

• 9.8m/s²

• 10m/s²

• O.5m/s²

What is the relation between weight of a body and radius of earth?

• Inversely proportional

• Directly proportional

• Equal

• None of them

What is the food of Eri silkmoth?

• Mulberry leaf

• Mango leaf

• Royal jelly

• Caster leaf

In which stage larva of silkworm start to produce silk?

• 1st instar

• 4th instar

• 5th instar

• 2nd instar

How many compound eyes does a honey bee have?

• 2 pair

• 1 pair

• 3 pair

• 4 pair

Which type of bee doesn't have pollen basket?

• Drone bee

• Worker bee

• Queen bee

• Drone and Queen bee

What is the study of honey bee called ?

• Apiculture

• Sericulture

• Melitology

• None of them