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Class 10 > PYQ SCIENCE > 2020 > SET A

2020

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Q31
Differentiate between a glass slab and a glass prism.
What happens when a narrow beam of (i) a monochromatic light, and (ii) white light passes through (a) glass slab and (b) glass prism?

Free Response Question Hard View solution

Q32
Draw a labelled diagram to show (i) reddish appearance of the sun at the sunrise or the sunset and (ii) white appearance of the sun at noon when it is overhead.

Free Response Question Hard View solution

Q33
A V-I graph for a nichrome wire is given below. What do you infer from this graph? Draw a labelled circuit diagram to obtained such a graph.

Free Response Question Hard View solution

Q34
(a) Write the mathematical expression for Joule's law of heating.

Free Response Question Easy View solution

Q35
(b) Compute the heat generated while transferring 96000 coulombs of charge in two hours through a potential difference of 40 V.

Free Response Question Medium View solution

Q36
Carbon cannot reduce the oxides of sodium, magnesium and aluminium to their respective metals. Why? Where are these metal placed in the reactivity series? How are these metals obtained from their ores? Take an example to explain the process of extraction along with chemical equations.

Free Response Question View solution

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2020

Q31
Differentiate between a glass slab and a glass prism.
What happens when a narrow beam of (i) a monochromatic light, and (ii) white light passes through (a) glass slab and (b) glass prism?

Solution

Q32
Draw a labelled diagram to show (i) reddish appearance of the sun at the sunrise or the sunset and (ii) white appearance of the sun at noon when it is overhead.

Solution

Q33
A V-I graph for a nichrome wire is given below. What do you infer from this graph? Draw a labelled circuit diagram to obtained such a graph.

Solution

Q34
(a) Write the mathematical expression for Joule's law of heating.

Solution

Q35
(b) Compute the heat generated while transferring 96000 coulombs of charge in two hours through a potential difference of 40 V.

Solution

Q36
Carbon cannot reduce the oxides of sodium, magnesium and aluminium to their respective metals. Why? Where are these metal placed in the reactivity series? How are these metals obtained from their ores? Take an example to explain the process of extraction along with chemical equations.

Solution

Subjects

2020

Q31 Differentiate between a glass slab and a glass prism. What happens when a narrow beam of (i) a monochromatic light, and (ii) white light passes through (a) glass slab and (b) glass prism?

Solution

Q32 Draw a labelled diagram to show (i) reddish appearance of the sun at the sunrise or the sunset and (ii) white appearance of the sun at noon when it is overhead.

Solution

Q33 A V-I graph for a nichrome wire is given below. What do you infer from this graph? Draw a labelled circuit diagram to obtained such a graph.

Solution

Q34 (a) Write the mathematical expression for Joule's law of heating.

Solution

Q35 (b) Compute the heat generated while transferring 96000 coulombs of charge in two hours through a potential difference of 40 V.

Solution

Q36 Carbon cannot reduce the oxides of sodium, magnesium and aluminium to their respective metals. Why? Where are these metal placed in the reactivity series? How are these metals obtained from their ores? Take an example to explain the process of extraction along with chemical equations.

Solution

Subjects

Q31
Differentiate between a glass slab and a glass prism.
What happens when a narrow beam of (i) a monochromatic light, and (ii) white light passes through (a) glass slab and (b) glass prism?

Q32
Draw a labelled diagram to show (i) reddish appearance of the sun at the sunrise or the sunset and (ii) white appearance of the sun at noon when it is overhead.

Q33
A V-I graph for a nichrome wire is given below. What do you infer from this graph? Draw a labelled circuit diagram to obtained such a graph.

Q34
(a) Write the mathematical expression for Joule's law of heating.

Q35
(b) Compute the heat generated while transferring 96000 coulombs of charge in two hours through a potential difference of 40 V.

Q36
Carbon cannot reduce the oxides of sodium, magnesium and aluminium to their respective metals. Why? Where are these metal placed in the reactivity series? How are these metals obtained from their ores? Take an example to explain the process of extraction along with chemical equations.