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Which of the following works is attributed to Erasmus, a key figure in humanism?

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Important Questions on Structure of Atom

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Chemistry>Physical Chemistry>Structure of Atom>Dalton's Idea of Atom

A particle of mass

m

is moving in a circular path of constant radius

r

such that its centripetal acceleration

a_{c}

is varying with time

t

a_{c} = k^{2} r t^{2}

, where

k

is a constant. The power delivered to the particle by the force acting on it is -

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Chemistry>Physical Chemistry>Structure of Atom>Dalton's Idea of Atom

A person throws two fair dice. He wins Rs.

15

for throwing a doublet (same numbers on the two dice), wins Rs

12

when the throw results in the sum of

9

, and loses Rs.

6

for any other outcome on the throw. Then the expected gain/loss (in Rs.) of the person is:

EASY

Chemistry>Physical Chemistry>Structure of Atom>Dalton's Idea of Atom

In our solar system, the inter-planetary region has chunks of matter (much smaller in size compared to planets) called asteroids. They

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Chemistry>Physical Chemistry>Structure of Atom>Dalton's Idea of Atom

Write the Kepler's laws of planetary motion.

HARD

Chemistry>Physical Chemistry>Structure of Atom>Dalton's Idea of Atom

A planet moves around Sun in an elliptical orbit of eccentricity e. The ratio of the velocity at perigee

V_{p}

and at apogee

V_{a}

is given by

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EASY

Chemistry>Physical Chemistry>Structure of Atom>Dalton's Idea of Atom

Planets revolve around the sun in _____ orbits.

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Chemistry>Physical Chemistry>Structure of Atom>Dalton's Idea of Atom

A planet is revolving around the sun in an elliptical orbital as shown in the figure. At which point will its

K . E .

be maximum?

Question Image

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Chemistry>Physical Chemistry>Structure of Atom>Dalton's Idea of Atom

A planet is revolving around the sun in an elliptical path as shown in the figure. The orbital velocity of the planet will be minimum at

Question Image

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Chemistry>Physical Chemistry>Structure of Atom>Dalton's Idea of Atom

A planet of mass

m

moves around the sun of mass

M

in an elliptical orbit. The maximum and minimum distance of the planet from the sun are

r_{1}

and

r_{2}

respectively. The time period of the planet is proportional to:

EASY

Chemistry>Physical Chemistry>Structure of Atom>Dalton's Idea of Atom

The time period of a satellite of earth is

5 hr

. If the separation between the earth and the satellite is increased to

4

times the previous value, the new time period will become

EASY

Chemistry>Physical Chemistry>Structure of Atom>Dalton's Idea of Atom

If a new planet is discovered rotating around the Sun with the orbital radius double that of the Earth, then what will be its time period? (in Earth's day)

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Chemistry>Physical Chemistry>Structure of Atom>Dalton's Idea of Atom

If suddenly, the gravitational force of attraction between Earth and a satellite, revolving around it, becomes zero, the satellite will

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Chemistry>Physical Chemistry>Structure of Atom>Dalton's Idea of Atom

What is the difference between perihelion and aphelion.

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Chemistry>Physical Chemistry>Structure of Atom>Dalton's Idea of Atom

In planetary motion, the areal velocity of position vector of a planet depends on angular velocity $(ω)$ and the distance of the planet from sun $(r)$ . If so, the correct relation for areal velocity is:

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Chemistry>Physical Chemistry>Structure of Atom>Dalton's Idea of Atom

Which of the following graphs represents the motion of a planet moving about the sun?

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Chemistry>Physical Chemistry>Structure of Atom>Dalton's Idea of Atom

According to Kepler, the period of revolution of a planet

T

and its mean distance from the sun

(r)

is related by the equation.

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Chemistry>Physical Chemistry>Structure of Atom>Dalton's Idea of Atom

The distance of a planet from the sun is

40

times that of the earth. What is the ratio of their time periods of revolution around the sun?

EASY

Chemistry>Physical Chemistry>Structure of Atom>Dalton's Idea of Atom

The earth moves around the sun in an elliptical orbit as shown in the figure. The ratio,

\frac{O A}{O B} = x

. The ratio of the speed of the earth at

B

and at

A

EASY

Chemistry>Physical Chemistry>Structure of Atom>Dalton's Idea of Atom

Cotyledons are also called-

EASY

Chemistry>Physical Chemistry>Structure of Atom>Dalton's Idea of Atom

In planetary motion, the areal velocity of position vector of a planet depends on angular velocity

(ω)

and the distance of the planet from sun (r). If so, the correct relation for areal velocity is

Which of the following works is attributed to Erasmus, a key figure in humanism?

Important Questions on Structure of Atom

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