Two bulbs have ratings 100 W, 220 V and 60 W, 220 V. Which of the following statement is true.
A) Two bulbs have same resistance
B) The bulb 100 W has greater resistance than 60 W
C) The bulb 60 W has greater resistance than 100 W.
D) None
1 Answers
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You are given four bulbs of 25 W, 40 W, 60 W, and 100 W of power, all operating at 230 V.
Correct answer is (D) 100 W
2 Answers 1 views
There is a box containing 30 bulbs of which 5 are defective. If two bulbs are chosen at random from the box in succession without replacing the first,
Correct Answer - `2/87`
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निम्न में से प्रत्येक को दशमलव रूप में लिखिए : `{:((a)20+4/10+1/1000,(b)137+5/100),((c)7/10+6/100+4/1000,(d)23+2/10+6/1000),((e)700+20+5+4/100,):}`
Correct Answer - `{:((a)29.41,(b)137.05,(c)0.764,(d)23.206,(e)725.09):}`
2 Answers 1 views
It is known that a box of 800 electric bulbs contains 36 defective bulbs . One bulb is taken at random of the box. What is the probability that the bu
Correct Answer - `(191)/(200) `
2 Answers 1 views
The two electrons have the following set of quantum numbers : P = 3, 2, -2,+(1/2) Q = 3, 0, 0, +(1/2) Which of the following statement is TRUE?
Option : (B) P has greater energy than Q
2 Answers 1 views
You have installed LED bulbs inspite of other bulbs. The conservative method regarding environment is ………
Answer is (A) Reduce
2 Answers 1 views
एक वैधुत बल्ब पर 100 वाट तथा 220 वोल्ट लिखा है । इसके तन्तु का प्रतिरोध क्रियाशील अवस्था में ज्ञात कीजिए । यदि तन्तु की लम्बाई 0.1 मीटर तथा त्रिज्या `
Correct Answer - 484 ओम , `9.5xx10^(-6)` ओम - मीटर ।
2 Answers 1 views
Say True or False. (i) 8567 is rounded off as 8600 to the nearest 10. (ii) 139 is rounded off as 100 to the nearest 100.
(i) False (ii) True (iii) False
2 Answers 1 views
From the following which statement is true for switch statement.
(a) switch is used to test the equality
2 Answers 1 views
Two bulbs of volumes 200 `cm^(3)` and 100 `cm^(3)` are connected by a short tube containing an insulating porous plug that permits equalization of pre
Correct Answer - ac
2 Answers 3 views