1 Watt = ………………..
A) 1 erg/s
B) 1 J/s
C) 1 Newton/ sec
D) 1 Newton . sec
1 Answers
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(I) Kepler derived the laws of planetary motion. (II) Newton provided the reason behind the laws of planetary motion.
Correct option is: (B) (II) is correct.
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Newton’s law of gravitation is called universal law because (A) force is always attractive.
(D) it is applicable at all places of universe for all distances between all particles.
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Identify the odd one from the given below. 1. James Watt
Answer is (D) 4
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Arrange the incidents given below in the chronological order i) James Watt
(A) i, ii, iii, iv
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The kilo watt hour is the unit of ……………………..
B) electrical energy
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S.I. Unit of work is ………………. A) Erg B) Joule
Correct option is B) Joule
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1 N – m is equal to ………………. A) Erg B) Newton C) Pascal D) Joule
Correct option is D) Joule
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A black body radiates energy at the rate of `E "watt"//m^(2)` at a high temperature `TK` when the temperature is reduced to `[(T)/(2)]K` Then radiant
Correct Answer - D `E=sigmaT^(4)rArr(E_(1))/(E_(2))=((T_(1))/(T_(2)))^(4)`
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यदि `ax + b {sec(tan^(-1)x)} = c` तथा `ay + b {sec(tan^(-1)y)} = c`, तब ` (x+y)/(1-xy)` का मान होगा
Correct Answer - B मान लीजिए `tan^(-1) x = alpha` तथा `tan^(-1) y = beta` तब , `a tan alpha + b sec alpha = c ` ...(i) तथा `a tan...
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यदि `ax + b {sec(tan^(-1)x)} = c` तथा `ay + b {sec(tan^(-1)y)} = c`, तब `(1+xy)/(x+y) ` का मान होगा
Correct Answer - A मान लीजिए `tan^(-1) x = alpha` तथा `tan^(-1) y = beta` तब , `a tan alpha + b sec alpha = c ` ...(i) तथा `a tan...
2 Answers 1 views