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

Parallax is a displacement or difference in the apparent position of an object viewed along two different lines of sight, and is measured by the angle or semi-angle of inclination between those two lines. Distance between the two viewpoints is called Basis.

Similarly, α = d/D
Whereα = angular size of the planet (angle subtended by d at earth) and d is the diameter of the planet.αis angle between the direction of the telescope when two diametrically opposite points of the planet are viewed.

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When will result release?

Posted by Daya Ram 1 day, 4 hours ago

CBSE > Class 11 > Physics

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Convert 1 parsec into 1AU

Posted by Tanisha Dayma 1 day, 4 hours ago

CBSE > Class 11 > Physics

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Physics is hard or not

Posted by Lalit Kumar Meena 1 day, 7 hours ago

CBSE > Class 11 > Physics

1 answers

Yash Pant 1 day, 5 hours ago

The answer seems to be different for different students. But according to my point of view if you donot only mug up things but understand carefully about the whole physical phenomena then it becomes very easy. For learning something you must see it around you. And as you know we are very fortunate because physics is going on continuously around us. So i want to say that feel the subject then i will assure you that you would surely love physics.

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F(x)=x^3,g(y)=y-1,h(z)=z+1. F(g(h(x)))=

Posted by Prity Singh 1 day, 7 hours ago

CBSE > Class 11 > Physics

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A small steel ball of radius

Posted by Sahil Gamer 1 day, 8 hours ago

CBSE > Class 11 > Physics

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Describe unit.

Posted by 💯 💯 1 day, 10 hours ago

CBSE > Class 11 > Physics

1 answers

Harsha Asiwal 1 day, 3 hours ago

Unit means one...

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Let A= 5 +- 0.5 and B=2+- 0.25. Calculate A+B and A-B

Posted by Pakhi Baghel 1 day, 22 hours ago

CBSE > Class 11 > Physics

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Briefly explain parallax method.

Posted by Mona Sharma 💎 1 day, 22 hours ago

CBSE > Class 11 > Physics

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What is the derivative of "sin2x"?????????? (Differential coefficient)

Posted by Drishti Arora 1 day, 23 hours ago

CBSE > Class 11 > Physics

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A travelling telescope is focussed at the bottom of stank over a coin. Now tank is filled up-to a height of 25 cm with a liquid of Refractive index 1.6. By what distance would the telescope be moved to focus on the coin again??

Posted by Priya Prakash 1 day, 23 hours ago

CBSE > Class 11 > Physics

1 answers

Priya Prakash 1 day, 20 hours ago

Somebody Pls..... answer

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Why speed of light is possible highest speed?

Posted by Mohit K 2 days ago

CBSE > Class 11 > Physics

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A physical quantity X is represented by X =ab^2/c^3. the percentage errors in a, b, c are 1%,3%and,2% respectively. find the maximum percentage error in x

Posted by Mohammed Anoosh Asharaf 2 days, 7 hours ago

CBSE > Class 11 > Physics

1 answers

Priya Prakash 1 day, 23 hours ago

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What is a unit vector?

Posted by Vicky Tanwar 2 days, 22 hours ago

CBSE > Class 11 > Physics

3 answers

Komal Sharma 1 day, 23 hours ago

Vector have both direction and magnitude. And the magnitude is 1

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Yogita Ingle 2 days, 7 hours ago

A unit vector is a vector of unit magnitude and a particular direction.

They specify only direction. They do not have any dimension and unit.
In a rectangular coordinate system, the x, y and z axes are represented by unit vectors, î,ĵ andk̂
These unit vectors are perpendicular to each other.
|î| = |ĵ | = |k̂| = 1

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Sonam Malik 2 days, 13 hours ago

Vector whose magnitude is 1

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Prism

Posted by Vicky Tanwar 2 days, 22 hours ago

CBSE > Class 11 > Physics

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Komal Sharma 1 day, 23 hours ago

It is a transparent glass which seperates light that passes through it , which is of seven colour

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How is physics an exciting subject

Posted by Khushi Bansal 4 days, 1 hour ago

CBSE > Class 11 > Physics

1 answers

Rayvanth Kumar 3 days, 21 hours ago

Ha ha just relate physics with day to day activities..

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Cosx/1+e^2x

Posted by Shwetesh Vikram Singh 5 days ago

CBSE > Class 11 > Physics

1 answers

Anima Singh Gaur 3 days, 9 hours ago

- sin x + e^2x × 2

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When a man standing on a turntable suddenly drops his hands to his sides, why does the table move with more angular velocity?

Posted by Mohammed Anoosh Asharaf 5 days, 8 hours ago

CBSE > Class 11 > Physics

1 answers

Shivendu Gaur 3 days, 4 hours ago

Apply the law of conservation of angular momentum I1W1=I2W2 as moment of inertia decreases , angluar velocity increases

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If the ice on the polar cups of the earth melts, how will it affect the duration of the day?

Posted by Mohammed Anoosh Asharaf 5 days, 8 hours ago

CBSE > Class 11 > Physics

1 answers

Yogita Ingle 5 days, 7 hours ago

Well, the north polar ice cap would not have much effect, because it is floating sea ice. The ice caps that would matter are the Antarctica and Greenland ice caps. If they were to melt, days would get slightly longer (and there would be slightly fewer of them in a year). This is because the liquid water would distribute more evenly about the globe rather than all being near the poles, so the Earth's moment of inertia would increase. Since the Earth's angular momentum will not change, that means that its angular velocity (rate of turning) will decrease.
This is analogous to what happens on a playground carousel when a person standing near the axis moves outward: the rotation will slow.
This will be a very small change, as the mass of water in the polar ice caps is only a teeny tiny fraction of the total mass of the Earth.

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If earth be at one half of its present distance from the sun, how many days will there be in a year?

Posted by Mohammed Anoosh Asharaf 5 days, 8 hours ago

CBSE > Class 11 > Physics

1 answers

Yogita Ingle 5 days, 7 hours ago

By Keplers laws of planetary motion, we know that T²is proportional to R³

Hence, T₁² / R₁³ = T₂² / R₂³

(T₂ / T₁ )² = (R₂ / R₁ )³

By the given problem, R₂is half of R₁ R₂ = R₁/ 2

Hence,

(T₂ / T₁ )² = (R₁/ 2 R₁)³ = 1/8

Substituting T₁ as 1 year

T₂² = 1/8 (1)² = 1/8 (365 days)²

T₂=129days

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The temperature of air increases by 4 times, by what factor does the speed of the sound in air vary?

Posted by Mohammed Anoosh Asharaf 5 days, 9 hours ago

CBSE > Class 11 > Physics

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State and prove the conservation of energy for a body falling in an inclined plane

Posted by Ambika Sharma 5 days, 9 hours ago

CBSE > Class 11 > Physics

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