1 : 1. Comprehension : Letters of the Alphabet 2 : 2. Comprehension ...

3 : Ch. 3 Propagation of Light
Q. 38 See the picture. What will happen when the cardboard (C) is moved away
from the ball (B)?
[1]Both umbra and penumbra will
grow in size
[3]Penumbra will grow, and umbra
will decrease in size.
Wrong! You Entered : 0, Correct Answer : 3.
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[2]Only penumbra will grow in size,
and umbra will remain the same.
[4]Umbra will increase, and
penumbra will grow in size
4 : Ch. 4 Transmission of Heat
Q. 39 When an iron rod is heated at one end, the heat reaches the other end
after a while. This form of transfer of heat is called ---
[1]Convection
[2]Explosion
[3]Radiation
[4]Conduction
Wrong! You Entered : 0, Correct Answer : 4.
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5 : Ch. 5 Effects of Heat
Q. 40 Which of the following is not a correct statement?
[1] When sufficient heat is given to [2] When heat is taken away from
iron, it melts.
frozen coconut oil, it melts.
[3] When heat is taken away from [4] When heat is given to water, it
water, it becomes ice.
becomes vapour.
Wrong! You Entered : 0, Correct Answer : 2.
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