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A unit is a specific measure given to a dimension . A dimension is nothing more than a combination of :- L- length M - mass T - time Q - electrical charge ???????

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The length and breadth of a rectangular sheet are measured to be 5.7 cm and 3.4 CM respectively by an ordinary scale reading up to 0.1 cm find the percentage error in the area of the sheet

Posted by Nisha Pandey 7 years, 5 months ago

CBSE > Class 11 > Physics

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Dimensional consistency of v²- u² = 13 as

Posted by Ggg Ghh 7 years, 5 months ago

CBSE > Class 11 > Physics

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H!Mαη$Hμ Ұαδαυ ✔️ 7 years, 5 months ago

It is dimensionally correct.

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Two sphere have their radius in the ratio 1:2 compare the surface charge density.If the ratio of charge on them is 1:2

Posted by Rakhi Gupta 7 years, 5 months ago

CBSE > Class 11 > Physics

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A boy runs from his home to a market 1 km away he reaches the market in 30 min seeing the market closed . He at once run back to his home and stop after 15 min at his friend house which is 1/2 km away from the market. Calculate average speed and average velocity .....

Posted by Vanisha Meena 7 years, 5 months ago

CBSE > Class 11 > Physics

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Vishwajeet Kumar 7 years, 5 months ago

Av. Speed - 1+1/2 upon total time (which is 1H) = 3/2km/hr. Av. Velocity - 1-1/2 upon toal time(which is 1H ) = 1/2km/hr

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Definition of metre and kilometre

Posted by Vanisha Meena 7 years, 5 months ago

CBSE > Class 11 > Physics

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Shikha Singh 7 years, 5 months ago

One kilogram is defined as the mass equal to the platinum iradium cylinder kept at seveir near paris in france

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Shikha Singh 7 years, 5 months ago

Metre is defined as the path travelled by the light in 1/299795458of a sec in vaccum is known as metre

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Divya D Synrem 7 years, 5 months ago

Both are unit of measurement for lenght.

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A new unit of length is chosen such that the speed of light in vacuum is unity. What is the distance between the Sun and the Earth in terms of the new unit if light takes 8 min and 20 s to cover this distance?

Posted by Ďãřşháñăã Yadav ? ? ? ✊ 7 years, 5 months ago

CBSE > Class 11 > Physics

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Amrit Amrit 7 years, 5 months ago

Speed of light= 300000 km/ss Distance travell with this speed in 8 min 20 sec or 500 sec. = 300000*500 = 150000000 = 1.5* 10^9 km

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Convert 10^9sec in years

Posted by Spoorti Gujjar 7 years, 5 months ago

CBSE > Class 11 > Physics

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When a planet X is at a distance of 824.7 million kilometers from earth its angular diameter is measured to be 35.72 11 of arc. Calculate the diameter of ‘X’.

Posted by Ďãřşháñăã Yadav ? ? ? ✊ 7 years, 5 months ago

CBSE > Class 11 > Physics

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1 giga =

Posted by Vatsal Vaghasiya 7 years, 5 months ago

CBSE > Class 11 > Physics

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Alok Kumar 7 years, 5 months ago

1024 MB

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Siya Pandey 7 years, 5 months ago

1000 mega

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If Unit of vector along p^+2q^

Posted by Arya Kumar 7 years, 5 months ago

CBSE > Class 11 > Physics

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is there is change in cbse syllabus for 11 science and maths

Posted by Aman Bhardwaj 7 years, 5 months ago

CBSE > Class 11 > Physics

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Aman Kumar 7 years, 5 months ago

No......

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Current=50A, Diameter =0.5×1/100metre. Then find magnetic induction on surface

Posted by A S 7 years, 5 months ago

CBSE > Class 11 > Physics

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Figure shows a projectile thrown with speed u is equal to 20 m per second at an angle 30 degree with horizontal from the top of a building 40 m high then the horizontal range of a projectile is

Posted by Rohit Kumar 7 years, 5 months ago

CBSE > Class 11 > Physics

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Parul Sharma 7 years, 5 months ago

The stone dropped will reach the ground first . Start with the extreme case that the horizontal speed is grater than or equal to the escape velocity of Earth . The stone thrown will never reach the ground For lower speed the stone will delayed by the changing direction of down. Even for a very small horizontal speed the stone is delayed only slightly.

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Two objects are thrown simultaneously with 50 m/s and 100 m/s respectively in horizontal direction. If point of projection is 2000 m above the ground, find which object will reach the ground first?

Posted by Ayushman Sharan 7 years, 5 months ago

CBSE > Class 11 > Physics