Assertion: The ratio 
is more for helium gas than for hydrogen gas.
Reason: Atomic mass of helium is more than that of hydrogen.
- If both the assertion and the reason are true and the reason is a correct explanation of the assertion
- If both the assertion and reason are true but the reason is not a correct explanation of the assertion
- If the assertion is true but the reason is false
- If both the assertion and reason are false
is more for helium gas than for hydrogen gas. Reason: Atomic mass of helium is more than that of hydrogen.
- If both the assertion and the reason are true and the reason is a correct explanation of the assertion
- If both the assertion and reason are true but the reason is not a correct explanation of the assertion
- If the assertion is true but the reason is false
- If both the assertion and reason are false
Assertion: Our ears cannot distinguish two notes, one produced by a violin and other by a guitar, if they have exactly same intensity and same frequency.
Reason: When a musical instrument is played, it produces a fundamental note which is accompanied by a number of overtones called harmonics.
- If both the assertion and the reason are true and the reason is a correct explanation of the assertion
- If both the assertion and reason are true but the reason is not a correct explanation of the assertion
- If the assertion is true but the reason is false
- If both the assertion and reason are false
Assertion: The de-Broglie wavelength equation has significance for any microscope and submicroscopic particles.
Reason: de-Broglie wavelength is inversely proportional to the mass of the object its velocity is constant.
- If both the assertion and the reason are true and the reason is a correct explanation of the assertion
- If both the assertion and reason are true but the reason is not a correct explanation of the assertion
- If the assertion is true but the reason is false
- If both the assertion and reason are false
Assertion: In stationary wave, there is no transfer of energy.
Reason: The ratio of kinetic energy to potential energy is independent of the position.
- If both the assertion and the reason are true and the reason is a correct explanation of the assertion
- If both the assertion and reason are true but the reason is not a correct explanation of the assertion
- If the assertion is true but the reason is false
- If both the assertion and reason are false
Assertion: Electrons move from a region of higher potential to a region of lower potential.
Reason: An electron has less potential energy at a point where potential is higher and vice-versa.
- If both the assertion and the reason are true and the reason is a correct explanation of the assertion
- If both the assertion and reason are true but the reason is not a correct explanation of the assertion
- If the assertion is true but the reason is false
- If both the assertion and reason are false
Given below are two statements:
| Assertion (A): | In a radioactive disintegration, an electron is emitted by the nucleus. |
| Reason (R): | Electrons are present inside the nucleus. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | (A) is false but (R) is true. |
Assertion: A normal human eye can clearly see all the objects beyond a certain minimum distance.
Reason: The human eye has the capacity to suitably adjust the focal length of its lens to a certain extent.
- If both the assertion and the reason are true and the reason is a correct explanation of the assertion
- If both the assertion and reason are true but the reason is not a correct explanation of the assertion
- If the assertion is true but the reason is false
- If both the assertion and reason are false
Assertion: A satellite moving in a circular orbit around the earth has a total energy E0, then its potential energy is –E0.
Reason: Potential energy of the body at a point in a gravitational field of orbit is 
- If both the assertion and the reason are true and the reason is a correct explanation of the assertion
- If both the assertion and reason are true but the reason is not a correct explanation of the assertion
- If the assertion is true but the reason is false
- If both the assertion and reason are false
Assertion: If a liquid in a vessel is stirred and left to itself, the motion disappear after few minutes.
Reason: The moving liquid exerts equal and opposite force.
- If both the assertion and the reason are true and the reason is a correct explanation of the assertion
- If both the assertion and reason are true but the reason is not a correct explanation of the assertion
- If the assertion is true but the reason is false
- If both the assertion and reason are false
Assertion: At the centre of earth a body has centre of mass, but no centre of gravity.
Reason: This is because g=0 at the centre of earth.
- If both the assertion and the reason are true and the reason is a correct explanation of the assertion
- If both the assertion and reason are true but the reason is not a correct explanation of the assertion
- If the assertion is true but the reason is false
- If both the assertion and reason are false
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