Question
The image in a plane mirror is virtual and laterally inverted. What does this statement mean?
✓
Answer
The image is virtual and laterally inverted means it cannot be obtained on a screen and is reversed sideways.
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Complete the following chart with reference to pre-disaster management.
They are not correct. The father with blood group A has genotype $I^AI^O.$ The mother with blood group $B$ has genotype $I^BI^O.$ Hence, the possible genotypes of the children will be $I^AI^B, I^AI^O, I^BI^O$ and $I^OI^O$. Thus, the possible blood groups of children will be $AB, A, B$ and $O.$ Hence, if the father has blood group A, and the mother has blood group $B, $ it is possible for them to have children with blood group O.
→Explain Bayer’s process.
A nuclear reaction is represented by the following equation:
$^{235}_{\ \ 92}\text{U}+{^{1}_{0}\text{n}}\rightarrow{^{139}_{\ \ 56}\text{Ba}}+{^{94}_{36}\text{Kr}}+\text{xc}+\text{E}$
→$^{235}_{\ \ 92}\text{U}+{^{1}_{0}\text{n}}\rightarrow{^{139}_{\ \ 56}\text{Ba}}+{^{94}_{36}\text{Kr}}+\text{xc}+\text{E}$
- Name the process represented by this equation and describe what takes place
- Identify the particle c and the number x of such particles produced in the reaction.
- What does E represent?
- Name one installation where the above nuclear reaction is utilised.
- What type of bomb is based on similar type of reaction?
The farmers have been cultivating a food plant X for over two thousand years and have produced as many as five entirely different looking vegetables A, B, C, D and E from it.
- What could the plant X be?
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Take two coils of about 50 turns. Insert them over a nonconducting cylindrical roll as shown in Figure.
(A thick paper roll can be used.) Connect coil 1 to a battery with a plug key K. Connect coil 2 to a galvanometer G. (1) Plug the key and observe the deflection in the galvanometer. (2) Unplug the key and again observe the deflection.
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(a) Which laws do we understand from the above description?
(b) Write the law regarding the area swept.
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→(a) Which laws do we understand from the above description?
(b) Write the law regarding the area swept.
(c) Write the law $T^2 ∝ r^3$ in your words.
What are the demerits of Mendeleev’s periodic table$?$
→Give scientific Reason :
Inert gases exist in the form of free atoms.
Inert gases exist in the form of free atoms.