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Two plane mirrors are inclined to each other at an angle of 45°. A ray of light is incident on mirror I and is reflected by mirror I and later by the mirror II. The total deviation of the ray for the given situation is


A45°
B130°
C180°
D90°

Study the given figure carefully. In which direction the net movement of water will take place?


A From solution 1 to solution 2
B From solution 2 to solution 1
C Both (A) or (B)
D No movement will take place

Study the given flowchart carefully.


P, Q, R and S are respectively

ASalt, sawdust, iron dust, camphor
BSawdust, iron dust, camphor, salt
CIron dust, camphor, sawdust, salt
DCamphor, iron dust, sawdust, salt.

Bees which are not carrying honey fly with a flapping frequency of 440 Hz while those which are carrying honey fly with a flapping frequency of 300 Hz. The sound made by bees which are not carrying honey has

AA lower pitch
BA higher pitch
CA smaller loudness
DA greater loudness

Find the figure from the options in which Fig.(X) is exactly embedded as one of its part.


A
B
C
D

Find the odd one out.

A
B
C
D

Sneha set up the experiment for melting of ice in a beaker and noted down the temperature throughout the process. What do you think she observed when the ice was melting?


A The temperature in the thermometer kept increasing till the whole ice melted.
B Once the melting process started, the temperature in thermometer remained constant though the heating was on.
C There was no change in temperature throughout the experiment.
D Ice did not melt on heating. It was converted to vapours.

Select the odd one out.

A

B

C

D

________ figures have atleast one line of symmetry.


A2
B1
C3
D4

Which of the following statements are correct?
(i) There is no water or air on the Moon.
(ii) The temperature on the Moon during day time is 50°C.
(iii) The gravitational pull of the Moon is about one-third of that of the Earth.
(iv) Moon completes one revolution in about 28 days.

A(i) and (ii) only
B(ii) and (iii) only
C(i) and (iv) only
D(i) and (iii) only