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A set-up is used to determine the focal length of a converging lens.


The object is a triangular opening cut out from a cardboard as observed by the observer as shown in the given figures.
Distance x and y are adjusted such that the observer sees a sharp image formed on the object itself. Focal length of the converging lens is

Ax
By
Cx + y
D2 x

Which of the following statements is incorrect for the given food item?
(i) The ingredients used to prepare this food are obtained from both plant and animal sources.
(ii) The major nutrients in this food are carbohydrates and proteins.
(iii) This food is also a source of vitaminc.
(iv) The ingredient sourced from plants is actually a seed.


A(i) and (ii)
B(iii) only
C(ii) and (iv)
DNone of these

Refer to the given flow chart and select the option that correctly identifies X, Y and Z.

Read the given statements and select the correct option.
Statement 1 : Translocation takes place through the cells of phloem.
Statement 2 : Phloem has elongated cells called vessels through which food is transported.

ABoth statements 1 and 2 are correct.
BStatement 1 is correct but statement 2 is incorrect.
CStatement 1 is incorrect but statement 2 is correct.
DBoth statements 1 and 2 are incorrect.

A ball is thrown upward from the ground with some initial velocity. The values of velocity attained by ball at different instants of time are given in the table.

Select the incorrect statement regarding it.

AThe maximum height attained by the ball is 320 m.
BThe height attained by the ball at 12 s is 160 m.
CThe ball will return to the ground after 16 s.
DAt the end of 16 s, the displacement of the ball is zero.

Which of the following actions/activities are done in the direction of gravitational force?



A1 and 2
B3 and 4
C2, 3 and 4
D1, 2, 3 and 4

Anita set up an experiment as shown below.

Which of the following graphs correctly represents the changes in weights of Visking tubings X and Y with time?

A
B
C
D

If you go on increasing the stretching force on a wire in a guitar, its frequency

A Increases
B Decreases
C Remain unchanged
D None of the above.

Refer to the given figure and select the incorrect statement regarding W, X and Y.


ANephron is the basic structural and functional unit of W.
BMicturition takes place through X.
CY stores urine temporarily.
DEach W weighs about 120 g - 150 g in an adult human.

In the circuit shown, three identical ammeter X, Y and Z has been added that measures the current in the respective area.
What is the order of the magnitudes of readings on the ammeter from largest to smallest?