Tiwari Academy Discussion

Biology Sir

Asked: December 29, 2020In: Class 10 Science

Differentiate between homologous and analgous organs, with examples.

NCERT Solutions for Class 10 Science Chapter 9 Important Board Questions Heredity and Evolution NCERT Books for Session 2022-2023 CBSE Board and UP Board Short Questions: Questions No: 1

Biology Sir

Asked: December 29, 2020In: Class 10 Science

A cross is carried between pure bred tall pea plant and pure bred dwarf pea plant. (a) What is the phenotype of F₁ progeny and why (b) What is the phenotype of F progeny when F₂ is selfed.

NCERT Solutions for Class 10 Science Chapter 9 Important Board Questions Heredity and Evolution NCERT Books for Session 2022-2023 CBSE Board and UP Board Short Questions: Questions No: 9

Learn Physics

Asked: December 29, 2020In: Class 10 Science

State the laws of refraction of light. Explain the term ‘absolute refractive index of a medium’ and write an expression to relate it with the speed of light in vacuum.

NCERT Solutions for Class 10 Science Chapter 10 Important Board Questions Light – Reflection and Refraction NCERT Books for Session 2022-2023 CBSE Board and UP Board 3 Marker Questions Questions No 8

Biology NCERT

Asked: December 29, 2020In: Class 10 Science

Why is vegetative propagation practiced for growing some types of plants?

NCERT Solutions for Class 10 Science Chapter 8 Important Board Questions How do Organisms Reproduce? NCERT Books for Session 2022-2023 CBSE Board and UP Board Short Questions Questions No: 5

Learn Physics

Asked: December 29, 2020In: Class 10 Science

If the image formed by a spherical mirror for all positions of the object placed in front Of it is always erect and diminished, what type of mirror is it? Draw a labelled ray Diagram to support your answer.

NCERT Solutions for Class 10 Science Chapter 10 Important Board Questions Light – Reflection and Refraction NCERT Books for Session 2022-2023 CBSE Board and UP Board 3 Marker Questions Questions No: 7

Biology NCERT

Asked: December 29, 2020In: Class 10 Science

What is the importance of variation?

NCERT Solutions for Class 10 Science Chapter 8 Important Board Questions How do Organisms Reproduce? NCERT Books for Session 2022-2023 CBSE Board and UP Board Short Questions Questions No: 4

Physics Sir

Asked: December 29, 2020In: Class 10 Science

(a) List the factors on which the resistance of a conductor in the shape of a wire depends. (b) Why are metals good conductors of electricity whereas glass is a bad conductor of electricity? Give reason. (c) Why are alloys commonly used in electrical heating devices? Give reason.

NCERT Solutions for Class 10 Science Chapter 12 Important Board Questions Electricity NCERT Books for Session 2022-2023 CBSE Board and UP Board Short Questions: Questions No: 9

Physics Sir

Asked: December 29, 2020In: Class 10 Science

(a) Write Joule’s law of heating. (b) Two lamps, one rated 100 W; 220 V, and the other 60 W; 220 V, are connected in parallel to electric mains supply. Find the current drawn by two bulbs from the line, if the supply voltage is 220 V.

NCERT Solutions for Class 10 Science Chapter 12 Important Board Questions Electricity NCERT Books for Session 2022-2023 CBSE Board and UP Board Short Questions: Questions No: 8

Physics Sir

Asked: December 29, 2020In: Class 10 Science

Which is the better way to connect lights and other appliances in domestic wiring and why?

NCERT Solutions for Class 10 Science Chapter 12 Important Board Questions Electricity NCERT Books for Session 2022-2023 CBSE Board and UP Board Short Questions: Questions No: 6

Physics Sir

Asked: December 29, 2020In: Class 10 Science

What would be new resistance if length of conductor is doubled and thickness is halved?

NCERT Solutions for Class 10 Science Chapter 12 Important Board Questions Electricity NCERT Books for Session 2022-2023 CBSE Board and UP Board Short Questions: Questions No: 4

Differentiate between homologous and analgous organs, with examples.

A cross is carried between pure bred tall pea plant and pure bred dwarf pea plant. (a) What is the phenotype of F₁ progeny and why (b) What is the phenotype of F progeny when F₂ is selfed.

State the laws of refraction of light. Explain the term ‘absolute refractive index of a medium’ and write an expression to relate it with the speed of light in vacuum.

Why is vegetative propagation practiced for growing some types of plants?

If the image formed by a spherical mirror for all positions of the object placed in front Of it is always erect and diminished, what type of mirror is it? Draw a labelled ray Diagram to support your answer.

What is the importance of variation?

(a) List the factors on which the resistance of a conductor in the shape of a wire depends. (b) Why are metals good conductors of electricity whereas glass is a bad conductor of electricity? Give reason. (c) Why are alloys commonly used in electrical heating devices? Give reason.

(a) Write Joule’s law of heating. (b) Two lamps, one rated 100 W; 220 V, and the other 60 W; 220 V, are connected in parallel to electric mains supply. Find the current drawn by two bulbs from the line, if the supply voltage is 220 V.

Which is the better way to connect lights and other appliances in domestic wiring and why?

What would be new resistance if length of conductor is doubled and thickness is halved?

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