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Assertion: The comets do not obey Kepler...

Assertion: The comets do not obey Kepler's laws of planetary motion Reason: The comets do not have elliptical orbits

A

A. if both assertion and reason are true and reason is the correct explanation of the assertion

B

B. if both assertion and reason are true but reason is not correct explanation of the assertion

C

C. if assertion is true, but reason is false

D

D. if both assertion and reason are false

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ASSERTION TYPE QUESTIONS : These questions consist of two statements each, printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses. A. If both Assertion and Reason are true and Reason is correct explanation of Assertion B. If both Assertion and Reason are true but Reasou is not correct explanation of Assertion. C. If Assertion is true but Reason is false. D. If both Assertion and Reason are false. Assertion : Air layering is commonly done in woody shrubs and trees. Reason: They do not bear the bending branches near the ground.

General instructions same as in chapter 1. Assertion:Bohr had to postulate that electrons in the stationary orbts around the nucleus do not radiate. Reason:According to classical physcis all moving electrons radiate.

Assertion : Actinoids form relatively less stable complexes as compared to lanthanoids. Reason : Actinoids can utilise their 5f orbitals along with 6d orbitals in bonding but lanthanoids do not use their 4f orbital for bonding.

These questions consist of two statement each, printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses. A. If both Assertion and Reason are true and Reason is a correct explanation of the Assertion. B. If both Assertion and Reason are true but Reason is not a correct explanation of the Assertion. C. If Assertion is true but Reason is false. D. If both Assertion and Reason are false. Assertion: Cold blooded animals do not have fat layer. Reason: They use their fat in metabolism during hibernation.

MODERN PUBLICATION-Unit Test - Gravitation-Example
  1. Assertion The stars twinkle, while the planets do not. Reason: The st...

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  2. Assertion: A planet is a heavenly body revolving round the sun. Reaso...

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  3. Assertion: The comets do not obey Kepler's laws of planetary motion R...

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  4. Assertion: The square of the period of revolution of a planet is propo...

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  5. Assertion: If the radius of the earth's orbit around the sun were twic...

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  6. Assertion: The earth is slowing down and as a result the moon is comin...

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  7. Assertion: The length of the day is slowly increasing Reason: The dom...

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  8. Assertion: The mass of the earth in terms of g, Rand G is given by M=g...

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  9. The change in the value of g at a height h h lt lt R above the surface...

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  10. Assertion: A tennis ball bounces higher on hills than in plains Reason...

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  11. Assertion: Average density of the earth depends on the value of g Rea...

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  12. Assertion: The earth without its atmosphere would be inhospitably cold...

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  13. Assertion: The time period of an earth satellite in a circular orbit i...

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  14. Assertion: The geostationary satellites are launched, so as to revolve...

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  15. Assertion: The time-period of pendulum on a satellite orbiting the ear...

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  16. A planet of mass m moves around the sun of mass M in elliptical orbit....

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  17. The duration of day is highest in :

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  18. A ball is thrown upwards with a velocity of 100 ms^-1. It will reach t...

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  19. A ball is thrown upwards with a velocity of 19.6 ms^-1. The maximum he...

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  20. What would be the acceleration due to gravity at another planet, whose...

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