step-up transformer
step-down transformer
d.c generator
a.c generator
Correct answer is B
In a step down transformer, there are more turns in the primary coil than in the secondary coil and more current flows in the secondary circuit than in the primary.
W
X
Y
Z
Correct answer is A
When drawing a ray diagram for instance drawing two rays from the head of the object, the point of intersection of the two rays represents the position of the head of the image, but in the case of parallel rays of light drawn from the object such that the image is likewise formed at infinity, the ray from the head of the object forms the head of the image, similarly, the ray from the leg of the image. from the diagrams drawn, it is only in W that the ray from the head forms the leg of the image, others are correctly drawn.
The oil on the dishes repels the soap
soap and heat decrease the surface tension of oil
soap increases the surface tension of oil and water
Hot water increases the surface tension of oil
Correct answer is B
No explanation has been provided for this answer.
The material used to slow down the neutrons in a nuclear reactor is
boron
copper
graphite
uranium
Correct answer is C
No explanation has been provided for this answer.
The depolarising agent in a Leclanche cell is?
carbon rod
ammonium chloride
manganese (IV) oxide
zinc plate
Correct answer is C
No explanation has been provided for this answer.
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