Tiwari Academy Discussion

Sneha Thakur

Asked: October 29, 2020In: Class 10

An umbrella has 8 ribs which are equally spaced Assuming umbrella to be a flat circle of radius 45 cm, find the area between the two consecutive ribs of the umbrella.

NCERT Solutions for Class 10 Science Chapter 12 Important NCERT Questions Areas Related To Circles Class, NCERT Books for Session 2022-2023 CBSE Board and UP Board Others state Board EXERCISE 12.2 Page No:231 Questions No:10

Sneha Thakur

Asked: October 29, 2020In: Class 10

A car has two wipers which do not overlap. Each wiper has a blade of length 25 cm sweeping through an angle of 115°. Find the total area cleaned at each sweep of the blades.

NCERT Solutions for Class 10 Science Chapter 12 Important NCERT Questions Areas Related To Circles Class, NCERT Books for Session 2022-2023 CBSE Board and UP Board Others state Board EXERCISE 12.2 Page No:231 Questions No:11

Sneha Thakur

Asked: October 29, 2020In: Class 10

A round table cover has six equal designs as shown in If the radius of the cover is 28 cm, find the cost of making the designs at the rate of ` 0.35 per cm2. (Use √3 = 1.7)

NCERT Solutions for Class 10 Maths Chapter 12 Important NCERT Questions Areas Related To Circles Class, NCERT Books for Session 2022-2023 CBSE Board and UP Board Others state Board EXERCISE 12.2 Page No:231 Questions No:13

Sneha Thakur

Asked: October 29, 2020In: Class 10

To warn ships for underwater rocks, a lighthouse spreads a red colored light over a sector of angle 80° to a distance of 16.5 km. Find the area of the sea over which the ships are warned. (Use π= 3.14)

NCERT Solutions for Class 10 Science Chapter 12 Important NCERT Questions Areas Related To Circles Class, NCERT Books for Session 2022-2023 CBSE Board and UP Board Others state Board EXERCISE 12.2 Page No:231 Questions No:12

Poll

Mayra Sharma

Asked: October 28, 2020In: Class 10

The device used for producing electric current is called a

NCERT Solution for Class 10 Science Chapter 13 Magnetic Effects of Electric Current NCERT Books for Session 2022-2023 CBSE Board and UP Board Exercises Questions Page No-240 Questions No-3

Poll

Mayra Sharma

Asked: October 28, 2020In: Class 10

The essential difference between an AC generator and a DC generator is that

NCERT Solution for Class 10 Science Chapter 13 Magnetic Effects of Electric Current NCERT Books for Session 2022-2023 CBSE Board and UP Board Exercises Questions Page No-240 Questions No-4

Poll

Mayra Sharma

Asked: October 28, 2020In: Class 10

At the time of short circuit, the current in the circuit

NCERT Solution for Class 10 Science Chapter 13 Magnetic Effects of Electric Current NCERT Books for Session 2022-2023 CBSE Board and UP Board Exercises Questions Page No-240 Questions No-5

Mayra Sharma

Asked: October 28, 2020In: Class 10

State whether true or false An electric motor converts mechanical energy into electrical energy.

NCERT Solution for Class 10 Science Chapter 13 Magnetic Effects of Electric Current NCERT Books for Session 2022-2023 CBSE Board and UP Board Exercises Questions Page No-240 Questions No-6 Part 1

Mayra Sharma

Asked: October 28, 2020In: Class 10

State whether true or false An electric generator works on the principle of electromagnetic induction.

NCERT Solution for Class 10 Science Chapter 13 Magnetic Effects of Electric Current NCERT Books for Session 2022-2023 CBSE Board and UP Board Exercises Questions Page No-240 Questions No-6 Part-2

Mayra Sharma

Asked: October 28, 2020In: Class 10

State whether true or false The field at the center of a long circular coil carrying current will be parallel straight lines.

NCERT Solution for Class 10 Science Chapter 13 Magnetic Effects of Electric Current NCERT Books for Session 2022-2023 CBSE Board and UP Board Exercises Questions Page No-240 Questions No-6 Part-3

The device used for producing electric current is called a

The essential difference between an AC generator and a DC generator is that

At the time of short circuit, the current in the circuit

State whether true or false An electric motor converts mechanical energy into electrical energy.

State whether true or false An electric generator works on the principle of electromagnetic induction.

State whether true or false The field at the center of a long circular coil carrying current will be parallel straight lines.

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