Filters

Home

CBSE

Class 12

Physics

Gravitation And Fluid

Gravitation And Fluid - Physics Questions asked by Filo students

Question 1

Q. निर्वांत मे कुछ दुरी पर स्थित दो election के बीच लगने वाला विबुत अंका व्ल तथा भुरूत्वाकर्षण वल का अनुपात ज्ञात करे:-

Topic:

Gravitation and Fluid

View solution

Question 2

प्रश्न 4. दो धन आवेश जोकि परस्पर

0.1

मी की दूरी पर हैं, एक-दूसरे को 18 न्यूटन के बल से प्रतिकर्षित करते हैं। यदि दोनों आवेशों का योग 9 माइक्रोकूलॉम हो, तो उनके अलग-अलग मान ज्ञात कीजिए। (2017) (2M)

Topic:

Gravitation and Fluid

View solution

Question 3

properties of matter waves. 13. Why we don't appear the law of matter waves in daily life? Unit

- 8

Chapter

- 12

| Atom | and Chapter- 13 | Nuclie

MCQ’s - 03 Que - 02+02

Write main postulates of Rutherford's atomic modal and also write its demer

Topic:

Gravitation and Fluid

View solution

Question 4

Ques. A brody weighs

63 N

on surf of Earth what is the value of

g

at height equal to half the Radius of earth.

h = \frac{R}{2}

g^{'} g^{'} ω = g (\frac{R + h}{R})^{2} = g (1 + \frac{h}{R})^{2} = g (\frac{1 + R}{2 \times R})^{2} = \frac{9}{4} g = .

Topic:

Gravitation and Fluid

View solution

Question 5

Q. A planet of mass

m

mover around the sun of mass

M

in an elliptical orit. The maximum

&

minimum distances of the planet from the sen are

M_{1} & r_{2}

respectively. The time period of the the planet is pro portional to.

a. r_{1}^{3/2} b. r_{2}^{3/2}

c. (r_{1} + r_{2})^{3/2} d. (r_{1} - r_{2})^{3/2}

2 a = r_{1} + r_{2}

a T \propto (a)^{3/2} = \frac{r _{1} + r _{2}}{2} \propto (r_{1} + r_{2})^{3/2} .

T^{2} \propto a^{3}

from A to

Topic:

Gravitation and Fluid

View solution

Question 6

35 Case Study: Read the following paragraph and answer the questions: A particle executing SHM possesses both kinetic energy and potential energy. when a body is displaced from its equilibrium position by doing work upon it, it. when the body is released it begins to move back with the velocity does acquiring kinetic energy. both Kinetic and potential energy of a particle in SHM very between zero and their maximum values. (i) Define SHM. (ii) The expression for displacement of an object in SHM is

x =

A cos (ω t)

. The potential energy at

t = T /4

is . P.

= 0

(iii) For a SHM, if the maximum potential energy becomes double, what will be the effect on total energy?

tats enongiy will remsin Δ am .

Topic:

Gravitation and Fluid

View solution

Question 7

A rope of diameter

1 cm

breaks if the tension in it exceeds

500 N

. The maximum tension that a rope of twice the diameter and double the length made up of same material can bear is

$500 N$
$1000 N$
$2000 N$
$4000 N$

Topic:

Gravitation and Fluid

View solution

Question 8

What is the equilibrium of

m_{0}

mass along the line joining to the masses?

Neutral
Stable
Unstable
None of these

Topic:

Gravitation and Fluid

View solution

Question 9

Strike out what is not true in (a) Rajkumar Shukla was :

a sharecropper
a politician
delegate
a landlord

Topic:

Gravitation and Fluid

View solution

Question 10

distance

r

are revolving in a circular orbit due to gravitational force. Find the speed of

m_{2}

$\frac{4 G m}{3 r}$
$\frac{G m}{3 r}$
$\frac{3 G m}{4 r}$
$\frac{G m}{r}$

Topic:

Gravitation and Fluid

View solution

Found the solution, but did not understand the concept?

Connect with a tutor in less than 60 seconds 24x7

Ask my first question

Question 11

process will be (The surface tension of the soap film is

3 \times 1 0^{- 2} N / m

)

$12 \times 1 0^{- 6} J$
$24 \times 1 0^{- 6} J$
$30 \times 1 0^{- 6} J$
$96 \times 1 0^{- 6} J$

Topic:

Gravitation and Fluid

View solution

Question 12

Diffrent masses of object have same gravitation force how ?

Topic:

Gravitation and Fluid

View solution

Question 13

Consider a cylinder half submerged in a liquid \& floating freely. Which of the following is incorrect- [NCERT Pg. 251] (i) Buoyant force acting on the cylinder is equal to half of its weight (ii) Net force acting on the cylinder is zero. (iii) Force applied by liquid on its base is equal to weight of cylinder

(i) and (iii)
(ii) and (iii)
(i) and (ii)
(i) $_{0} 50$

Topic:

Gravitation and Fluid

View solution

Question 14

केप्य ने ग्रहों के गति सम्बन्धी तीन नियम प्रस्त्तु किए जो अग्र प्रकार हैं1) प्रथम नियम अथवा कक्षाओं का नियम (First Law or Law bits) : प्रत्येक ग्रह सूर्य के चारों ओर दीर्घवृत्तीय कक्षा में इस प्रकार करता है कि सूर्य इस दीर्घवृत्तीय कक्षा के एक नाभि (Focus) पर चित्र

8.1

Topic:

Gravitation and Fluid

View solution

Question 15

(b) Deuterium undergoes fusion as per the reaction.

_{1}^{2} H +_{1}^{2} H ⟶_{2}^{3} He +_{0}^{1} n + 3.27 MeV

Find the duration for which an electric bulb of

500 W

can be kept glowing by the fusion of

100 g

of deuterium. (Term-II 2021-22) Calculate for how many years will the fusion of

Topic:

Gravitation and Fluid

View solution

Question 16

it is raised to a height

h

above the Earth's surface. If the body is (A) decrease by

0.5%

5. At which height from th (C) increase by

0.5%

(D) increase by

1%

The acceleration due to gravity decrease by

1%

? in the weight of a body when taken to a height of

16 km

above the surface 7. What is the value of acceleration due to gravity at a height equal to half the radius of earth, from surface of earth ? [take

g = 10 m / s^{2}

on earth's surface] 8. At which height from the earth's surface does the acceleration due to gravity decrease by

75%

of its value at earth's surface? 9. At which height above earth's surface is the value of '

g

' same as in a

100 km

deep mine?

Topic:

Gravitation and Fluid

View solution

Question 17

Сhapter Eight Gravitation 8.1INTRODUCTION Early in our lives, we become aware of the tendency of ail material objects to be attracted towards the earth. Anything 8.1 Introduction

thrown up falls down towards the earth, going uphill is lot 8.2 Kepler's laws _ more tiring than going downhill, raindrops from the clouds (1564-1642) who recognised the fact that all bodies. irrespective of their masses, are accelerated towards the earth 8.5 Acceleration due to with a constant acceleration. It is said that he made a public gravity of the earth 8.6 Acceleration due to experiments with bodies rolling down inclined planes and close to the more accurate value obtained later. A seemingly unrelated phenomenon, observation of stars. many countries since the earliest of times. Obser of attention in 8.9 Earth satellites satellite the planets which seem to have regul recorded mode netary motions proposed by Ptolemy about 200 . ago was a 'geocentric' model in which all celesthe the eart stars, the sun and the planets, all revolve possible for celest The only motion that was thought bomplicated schemes of moti objects was motion in a circle. Comprer to describe the obsen were put forward by Ptolemy in order tore described as mov motion of the planets. The planets circles themselves movin in circles with the centre of the circles also advanced by In larger circles. Similar theories were However a more ele astronomers some 400 years later. Hontre around whic model in which the Sun was the centre model - was al planets revolved - the 'heliocentric' A.D.) in his trea mentioned by Aryabhatta

(5^{th}

century monk named

Topic:

Gravitation and Fluid

View solution

Question 18

= - 2 GN

equilateral

△

Find net force on mass placed at

C

Topic:

Gravitation and Fluid

View solution

Question 19

1. The gravitational acceleration on the surface of earth is

g

. Find the increase in potential energy in lifting an object of mass

m

to a height equal to the radius of earth. 2. In a certain region of space gravitational field is given by

I = - (K / r)

(Where

r

is the distance from a fixed point and

K

is constant). Taking the reference point to be at

r = r_{0}

with

V = V_{0}

. Find the potential at a distancer. 3. Two masses of

1 0^{2} kg

and

1 0^{2} kg

are separated by

1 m

distance. Find the gravitational potential at the mid point of the line joining them. 4. The magnitude of intensity of gravitational field at a point situated at a distance

8000 km

from the centre of Earth is

6.0 N - kg

. The magnitude of gravitational potential at that point in

N - m / kg

will be :- (A) 6 (B)

4.8 \times 1 0^{7}

Topic:

Gravitation and Fluid

View solution

Question 20

\leftarrow

Iwo steel wires having same length are suspended from a ceiling under the same load. If the ratio of their energy stored per unit volume is

1 : 4

, the ratio of their diameters is : Energy density.

2 : 1

1 : 2

1 : 2

Topic:

Gravitation and Fluid

View solution

1 2 3 4 5 6 7

Get instant study help from an expert tutor 24/7

Download Filo

Filters

Filters

class

Class 6

Class 7

Class 8

Class 9

Class 10

Class 11

Class 12

Class 12 Passed

Government Job Aspirant

Undergraduate 1

subject

Physics

Biology

Chemistry

English

Mathematics

topic