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CBSE Class 11-science Answered

what is radians?Please explain the concept and the derivation in great detail as I dont know anything about it.
Asked by Anishma Joseph | 21 Jun, 2015, 06:35: PM
answered-by-expert Expert Answer
It is the unit of angle in a plane.
One radian is the angle subtended at the centre of a circle by an arc equal in length to the radius of the circle.

begin mathsize 14px style If space an space arc space of space length space d s space substends space an space angle space d straight theta space at space the space centre space O space of space straight a space circle space of space radius space r comma space then d straight theta equals ds over straight r radian end style
Syntax error from line 1 column 393 to line 1 column 413. Unexpected 'mathvariant'.
Answered by Faiza Lambe | 22 Jun, 2015, 08:14: AM

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CBSE 11-science - Physics
the dimension of stopping potential vo in photoelectric effect in units of plank's constant 'h',speed of light 'c' and gravitational constant 'G' and ampereA
Asked by derhebha955 | 03 Apr, 2024, 09:03: AM
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CBSE 11-science - Physics
In physics if 2 quantities are dimensionless then their dimensional formula are equal?
Asked by sumedhasingh238 | 28 Mar, 2024, 11:10: PM
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CBSE 11-science - Physics
frequency of vibration (n) of a stretched string depends on its length (l) , tension (t) and linear mass density taking proportionality constant k=½ find a relation between them
Asked by ss4172380 | 14 Nov, 2023, 08:05: AM
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CBSE 11-science - Physics
Calculate the wave number of a wave with a frequency of 6.2 *10^7
Asked by doddisriman | 29 Oct, 2023, 09:43: PM
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CBSE 11-science - Physics
The respective number of significant figures for the numbers 23.023; 0.0003 and 2.1´10-3 are (a) 4, 4, 2                     (b) 5, 1, 2                     (c) 5, 1, 5                     (d) 5, 5, 2
Asked by Naveensharma2007 | 26 Jun, 2023, 06:54: PM
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CBSE 11-science - Physics
signify digit of 0.7048
Asked by manthansakhare050 | 18 Dec, 2022, 01:54: AM
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CBSE 11-science - Physics
For class 12 physics cbse board will they ask us dimensional formula for anything?will there be questions expected as to write the dimensional formulas?  
Asked by adibafatima2004 | 11 Sep, 2021, 08:02: PM
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CBSE 11-science - Physics
if the unit of length and mass be doubled then the numerical value of w. r. t present value of universal gravitational constant will become
Asked by suhani.pare | 28 Jun, 2021, 09:03: PM
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CBSE 11-science - Physics
check the dimensional accuracy of n=1/2L*rootT/M
Asked by gopikagopakumar43 | 13 Dec, 2020, 12:56: PM
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CBSE 11-science - Physics
plzz solve this my que
question image
Asked by sagarrc1564 | 11 Sep, 2020, 01:33: PM
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