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Charge on a body is integral multiple of ± e where e is electronic charge. This is because of
The charge on a body is always an integral multiple of ±e (electronic charge) due to the quantization of charge. This principle states that charge exists in discrete packets and cannot be divided indefinitely. It is a fundamental property of nature. Answer: (b) Quantisation of charge. For more visitRead more
The charge on a body is always an integral multiple of ±e (electronic charge) due to the quantization of charge. This principle states that charge exists in discrete packets and cannot be divided indefinitely. It is a fundamental property of nature. Answer: (b) Quantisation of charge.
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If in two similar triangles, the ratio of their corresponding sides is 4:9, then the ratio of their areas is:
In two similar triangles, the ratio of their areas is equal to the square of the ratio of their corresponding sides. Given that the ratio of the corresponding sides is 4:9, the ratio of their areas can be calculated as: (Ratio of areas ) = ( Ratio of sides )² = ( 4:9 )² = 4² : 9² = 16:81 Thus, the cRead more
In two similar triangles, the ratio of their areas is equal to the square of the ratio of their corresponding sides.
Given that the ratio of the corresponding sides is 4:9, the ratio of their areas can be calculated as:
(Ratio of areas ) = ( Ratio of sides )²
= ( 4:9 )²
= 4² : 9²
= 16:81
Thus, the correct answer is 16:81.
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If ΔABC and ΔDEF are similar such that 2 AB = DE and BC = 8 cm, then EF =
Since ΔABC and ΔDEF are similar, the corresponding sides of the triangles are in proportion. That is: AB / DE = BC / EF It is provided that 2 AB = DE, i.e., DE / AB = 2 Therefore, the ratio of the corresponding sides of the triangles is 1:2 (AB:DE). Based on this ratio, we can express: BC / EF = 1 /Read more
Since ΔABC and ΔDEF are similar, the corresponding sides of the triangles are in proportion. That is:
AB / DE = BC / EF
It is provided that 2 AB = DE, i.e.,
DE / AB = 2
Therefore, the ratio of the corresponding sides of the triangles is 1:2 (AB:DE). Based on this ratio, we can express:
BC / EF = 1 / 2
Substituting BC = 8 cm:
8 / EF = 1 / 2
Divide both sides by 8:
EF = 2
EF = 8 × 2
EF = 16 cm
So, the answer is 16 cm.
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In ΔABC, the centroid G divides each median in the ratio:
The centroid (G) of a triangle is the point where all three medians intersect. A median is a line segment joining a vertex to the midpoint of the opposite side. The centroid divides each median in a fixed ratio. This ratio is 2:1, where the longer segment is closer to the vertex. In other words, theRead more
The centroid (G) of a triangle is the point where all three medians intersect. A median is a line segment joining a vertex to the midpoint of the opposite side. The centroid divides each median in a fixed ratio.
This ratio is 2:1, where the longer segment is closer to the vertex. In other words, the distance from the vertex to the centroid is twice the distance from the centroid to the midpoint of the opposite side.
Thus, the correct answer is 2:1 from the vertex.
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Electric field due to a single charge is
The electric field due to a single point charge is spherically symmetric because the field radiates equally in all directions from the charge. The field strength depends only on the distance from the charge, not the direction. Answer: (c) spherically symmetric. For more visit here: https://www.tiwarRead more
The electric field due to a single point charge is spherically symmetric because the field radiates equally in all directions from the charge. The field strength depends only on the distance from the charge, not the direction.
Answer: (c) spherically symmetric.
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