In the depth of 150 kms from the surface, the layer of the Earth consists
(A) Silicates
(B) Liquid metallic material like Nickel and Iron
(C) Heavy substances like Gold
(D) Various kinds of rocks
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Two chambers in a galvanic cell have volume equal to 1 litre. If one chamber consists of a metal rod A dipped in `A^(2+)`ion and other consists of ano
Correct Answer - 175
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A solenod of length 0.4m and diametre 0.6m consists of a single layer of 1000 turns of fine wire carrying a current of `5.0xx10^-3A` . Calculate the m
Correct Answer - `[2.77pixx10^(-6)T,2pixx10^(-5)T]`
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Authorised capital of Suhani Ltd. is Rs. 45,00,000 divided into 30,000 shares of Rs. 150 each. Out of these company issued 15,000 shares of Rs. 150 ea
Correct Answer - Share Capital-Rs. 21,00,000.
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Iluminance of `2.4 xx 10^(5)lm//m^(2)` of the surface is produced by sunlight falling normally on the surface of the earth. The distance of the earth
Correct Answer - `5.4 xx 106(27) cd, 6.78 xx 10^(28)lm`
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3. Suppose set \( A \) consists of first 250 natural numbers that are multiples of 3 and set \( B \) consists of first 200 even natural numbers. How many elements does \( A \cup B \) have? (a) 324 (b) 364 (c) 384 (d) 400
Given: n(A)=250 n(B)=200 A={3,6,9,12,.......750} B=2,4,6,8,10.......400} Therefore,A⋂B={6,12,18....396) =>n(A⋂B)=396/6=66 n(A∪B)=n(A)+n(B)-n(A⋂B) =250+200-66 ...
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…….. layer consists of electrically charged ions.
C) Thermosphere
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Stratosphere layer extends up to a height of ………….. kms.
Stratosphere layer extends up to a height of 50 kms.
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If R is the radius of the Earth and g is the acceleration due to gravity on the Earth’s surface, the mean density of the Earth is
Correct option is: (D) \(\frac{3g}{4\pi RG}\)
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The depth of a pond is 10 m. What is the apparent depth for a person looking normally to the water surface?
Given: Real depth of pond, dreal = 10 m, nw = \(\frac{4}{3}\) To find: Apparent depth Formula: n = \(\frac{Real\,depth}{Apparent\,depth}\) Calculation: From formula, ∴ Apparent depth = \(\frac{Real\,depth}{n}\) = \(\frac{10}{(\frac{4}{3})}\) = \(\frac{10\times3}{4}\) = 7.5 m
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The layer extends from the earth’s surface up to about 10 kilometers in altitude is
D) Troposphere
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