When Asha suspended four bars of different materials from a pole and brought the North pole of a bar magnet near part P and Q of each bar one by one as shown in figure, then observations she recorded are as follows:
Which of the following sets correctly represents metal bars I, II, III and IV?
|Bar I||Bar II||Bar III||Bar IV|
|A||Magnet||Stainless steel Bar||Magnet||Iron bar|
|B||Magnet||Iron bar||Magnet||Glass bar|
|C||Stainless steel bar||Magnet||Iron bar||Magnet|
|D||Magnet||Iron bar||Glass bar||Stainless steel bar|
In the given food web, an increase in the population of bulbul is likely to cause _________.
A Increase in grasshopper and snake populations
B Decrease in plant and caterpillar populations
C Increase in grasshopper and caterpillar populations
D None of these
Select the symbol that indicate the weather in which we need to wear both the objects shown in the box.
Which of the following is/are correctly matched?
|(i)||Process by which waste materials
are used to make new products
|(ii)||Large open areas used for
solid waste disposal
A(i) and (ii) only
C(i), (ii) and (iii)
A mirror can form images but a plane glass slab cannot. This is because a mirror
AReflects light while a plane glass slab absorbs light
BRefracts light while a plane glass slab reflects light
CReflects light while a plane glass slab refracts light
DRefracts light while a plane glass slab absorbs light.
ANSWER IS C.
In the graph, O to C represents a moving body. Which of the following is correct for the motion along BC ?
A Forward with uniform velocity.
B Backward with non-uniform velocity.
C Backward with uniform velocity.
D Forward with non-uniform velocity.
Explain it please
In column I, three identical lamps P, Q and R are arranged
in different configurations, while in column II the
information about brightness of lamps are mentioned.
Match column I with column II and select the correct
option from the given codes. (Neglect resistance of
A (i) → (A, C), (ii) → (A), (iii) → (B, C), (iv) → (C, D)
B (i) → (C, D), (ii) → (B), (iii) → (B, D), (iv) → (A, B)
C (i) → (A), (ii) → (C, D), (iii) → (B, C), (iv) → (B)
D (i) → (B, D), (ii) → (C), (iii) → (B, C), (iv) → (A)