CBSE > Class 11 > Physics | CBSE Board | Homework Help

Escape velocity is the minimum speed needed for an object to "break free" from the gravitational attraction of a massive body. The escape velocity from Earth is about 40,270 km/h (25,020 mph).
The velocity of this orbit depends on the distance from the object to the center of the Earth. The velocity has to be just right, so that the distance to the center of the Earth is always the same.The orbital velocity formula contains a constant, G, which is called the "universal gravitational constant“.

2Thank You

ANSWER

State newtons law of colling deduce its relation

Posted by Kunal Kishor 7 years, 2 months ago

CBSE > Class 11 > Physics

1 answers

Yogita Ingle 7 years, 2 months ago

Newton's law of cooling states that the rate of fall of temperature of a hot body is directly proportional to the temperature difference between the body and surrounding when temperature difference is small.
DT/dt ∝ (T - T₀)

2Thank You

ANSWER

What is the work energy theorem

Posted by Suksham Dhiman 7 years, 2 months ago

CBSE > Class 11 > Physics

3 answers

Aditi Shourya 7 years, 2 months ago

Work energy theorm is change in kinetic energy .

0Thank You

Naveen Kumar 7 years, 2 months ago

It states that work and energy are equivalent with each other

0Thank You

Rahul Singh? 7 years, 2 months ago

It states that the work done by displacing a body is equals to change in kinetic energy of the body! i.e. w=kf -ki

4Thank You

ANSWER

Write dimensions and it si unit

Posted by Hari Haran 7 years, 2 months ago

CBSE > Class 11 > Physics

1 answers

Yogita Ingle 7 years, 2 months ago

Dimensional formula of a physical quantity is the formula which tells us how and which of the fundamental units have been used for the measurement of that quantity. Dimensions of a physical quantity are independent of the system of units.

1Thank You

ANSWER

Volume of liquid collected per minute =15cm^3, head of liquid=30cm, length of the tube=25cm, diameter of the tube=0.2cm,density of liquids =2.3g/cm^-3.Find the coefficient of the viscosity of the liquid?

Posted by Himangshu Maji 7 years, 2 months ago

CBSE > Class 11 > Physics

1 answers

Himangshu Maji 7 years, 1 month ago

Pls help me.??

0Thank You

ANSWER

Derivation of lens formula

Posted by Jaikiran Venkatesh 7 years, 2 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

Will the momentum remain constant if some external force act on the system

Posted by Pratigya Pandey 7 years, 2 months ago

CBSE > Class 11 > Physics

2 answers

Patel Salahuddin 7 years, 2 months ago

Momentum will not conserved if external force is applied on it

0Thank You

Neha Delwal 7 years, 2 months ago

Momentum will remain conserved

1Thank You

ANSWER

Give an example of motion for which distance is equal to the magnitude of displacement?

Posted by Abhi Jeet 7 years, 2 months ago

CBSE > Class 11 > Physics

1 answers

Aditi Shourya 7 years, 2 months ago

When body moves in a straight line without reversing its direction.

0Thank You

ANSWER

Blue print of marks distribution?

Posted by Priya Banik 7 years, 2 months ago

CBSE > Class 11 > Physics

2 answers

Aman Kumar 5 years, 11 months ago

For class 11, different schools form their different blue prints...

5Thank You

Priya Dharshini ? 7 years, 2 months ago

It depends upon ur school. Mostly all chapters will have equal weightage 4 marks

0Thank You

ANSWER

If the linear momentum of a body is increased by 50%, what will be the % increase in the kinetic energy of the body?

Posted by Rishabh Jain 7 years, 2 months ago

CBSE > Class 11 > Physics

1 answers

Rishabh Jain 7 years, 1 month ago

125%

0Thank You

ANSWER

What is blue colour defect

Posted by Sanjeev Yadav 7 years, 2 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

a body of mass 30 kg said to be held against a rough vertical wall by applying a force normal to the wall find the minimum force to be applied. (u = 0.5)

Posted by Tejaswini Khole 7 years, 2 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

A planet has an escape velocity pf 11.2 km per s. a body thrown with twice the escape velocity. What is velocity of the body at infinite distance from the surface of the planet?

Posted by Sangeeth M?? 7 years, 2 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

What is meant by shearing strain

Posted by Nirmal Nithish 7 years, 2 months ago

CBSE > Class 11 > Physics

1 answers

Harshi Rajput 7 years, 2 months ago

Ratio of deformation to original strain

1Thank You

ANSWER

Define and difference between Ductile material and Brittle material.

Posted by Jasmine Jasmine 7 years, 2 months ago

CBSE > Class 11 > Physics

1 answers

Sangeeth M?? 7 years, 2 months ago

If fracture point and ultimate strength points are very close in stress strain curve then it is brittle. If the two points are seperated by a distance and are far apart it is ductile.

0Thank You

ANSWER

Where does the weight of the body is more at the sea level or at the ground?

Posted by Vasundhara Singh 7 years, 2 months ago

CBSE > Class 11 > Physics

2 answers

Patel Salahuddin 7 years, 2 months ago

At ground because sa we move toward centre gravity decreses and W=mg so gravity decreses then mass also decreses

1Thank You

Aman Kumar 7 years, 2 months ago

I think at the ground...weight will be more...

1Thank You

ANSWER

How much marks Ray optics in final exam

Posted by Priya Banik 7 years, 2 months ago

CBSE > Class 11 > Physics

2 answers

Priya Dharshini ? 7 years, 2 months ago

4 marks

0Thank You

Devansh Bhadana 7 years, 2 months ago

2Thank You

ANSWER

Hiiii Ray optics is easy or tough

Posted by Faizan Khan?? 7 years, 2 months ago

CBSE > Class 11 > Physics

6 answers

Priya Dharshini ? 7 years, 2 months ago

It is easy if u have idea of lense and mirror in class 10

0Thank You

Ankit Singh ?????? 7 years, 2 months ago

Good answer Anisha

1Thank You

Shivangi Bhardwaj 7 years, 2 months ago

Ray optics is still going on from the last 15 days... But still some topics are remaining... ?

1Thank You

Faizan Khan?? 7 years, 2 months ago

In your school ray optics is complete

0Thank You

Faizan Khan?? 7 years, 2 months ago

Thanks

0Thank You

Shivangi Bhardwaj 7 years, 2 months ago

If you study it by taking interest then it is not tough.... Well... Mirror and lens which we have studied in 10 are nearly same...... By the way chapter is so interesting.... ??

1Thank You

ANSWER

Important topics in physics

Posted by Naina Khan 7 years, 2 months ago

CBSE > Class 11 > Physics

1 answers

Aditi Shourya 7 years, 2 months ago

Projectile motion, bending of a cyclist,Bernoulli's theorm, capillary tube, total internal reflection, work energy theorm, pressure exerted by a gas molecules

1Thank You

ANSWER

Page 256 of 557

myCBSEguide

myCBSEguide

Test Generator

CUET Mock Tests

Download myCBSEguide App

All Courses

Other Websites

CBSE Courses

Resources

Corporate

NCERT Solutions

CBSE Sample Papers