Question: Which is more elastic water or air? Answer: By the application of external force, strain suffered my the water is less but air...

QUESTION: Amorphous solids are not true solids. Why? ANSWER: Solids having a regular periodic arrangement of atoms or molecules. But...

QUESTION: Why are household appliances connected in parallel? ANSWER: In the circuit parallel combinations, the potential drop is...

QUESTION: Why is manganin used for making standard resistors? ANSWER: For standard resistors, resistance should be a constant value at...

QUESTION: Why is the electric field always at right angles to the equipotential surface? Explain. ANSWER: If the electric field is not...

QUESTION: Why does the vehicle with a flattened tyre stop sooner than the one with inflated tyres? ANSWER: Due to flattening of tyres,...

QUESTION: Hydrogen is in abundance around the sun but not around earth. Why? ANSWER: The escape velocity on the Sun is very high as...

QUESTION: Can there be electric potential at a point with zero electric intensity? Give an example. ANSWER: Yes. At the midpoint of line...

QUESTION: Why are spokes provided in a bicycle wheel? ANSWER: The spokes of cycle wheel increases its moment of inertia (I) because...

QUESTION: Give an example where the velocity of an object is zero but its acceleration is not zero. ANSWER: For a body thrown up...

QUESTION: If the polar ice caps of the earth were to melt, what would the effect of the length of the day be? ANSWER: Earth rotates about...

QUESTION: A girl is swinging seated in a swing. What is the effect on the frequency of oscillation if she stands? ANSWER: If the girl...

QUESTION: The bob of a simple pendulum is a hollow sphere filled with water. How will the period of oscillation change, if the water...

QUESTION: The bob of a simple pendulum is made of wood. What will be the effect on the time period if the wooden bob is replaced by an...

QUESTION: Will a pendulum clock gain or lose time when taken to the top of a mountain? Answer: On the mountains acceleration due to...

Will a pendulum clock gain or lose time when taken to the top of a mountain? ANSWER The bob of a simple pendulum is made of wood. What...