Home
Class 11
PHYSICS
Assertion : The stars twinkle while the ...

Assertion : The stars twinkle while the planets do not.
Reason : The stars are much bigger in size than the planets.

A

Both A and R are true and R is the correct explanation of A

B

Both A and R are true and R is not the correct explanation of A

C

A is true and R is false

D

Both A and R is false

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Similar Questions

Explore conceptually related problems

Why do stars twinkle?

Explain why the planets do not twinkle?

Assertion : The electron gain enthalpy of chlorine is less negative than that of fluorine. Reason : The fluorine atom is much smaller in size than that of chlorine.

Explain why some planets do not have atmosphere.

Assertion : Blue star is at high temperature than red star. Reason : Wein's displacement law states that T prop (1//lambda_(m)) .

Assertion : A central force is such that the force on the planet is along the vector joining the sun and the planet. Reason : Conservation of angular momentum is valid for any central force.

Assertion : Electron revolves around a positvely charged nucleus like a planet revolves around the sun. Reason : The force acting in both the cases is of same kind.

Assertion : Small water drops are sperical while bigger water drops are not. Reason : In small water drops surface tension forces dominate while in bigger water drops gravity forces dominate.

Assertion : H-bonding occurs in H_(2)O due to larger size of O-atom. Reason : The size of O-atom is larger than H-atom.

Assertion : Angular momentum of a planet is constant about any point Reason : For acting on the planet is a central force.