Friday, 8 September 2017
CBSE Class 10 - Light - Reflection From Mirrors (Worksheet) (#cbseNotes)
Light - Reflection From Mirrors (Worksheet)
1. We get a diminished image with a concave mirror when the object is placed ____.
2. The drivers mirror used in automobiles is ____.
3. The distance of focus F from the pole P is termed as the ..................... of the mirror.
4. Mirror formula is ____.
Thursday, 7 September 2017
CBSE Class 11 - Business Studies - Chapter 4 - Business Services - Features Of Service (#cbseNotes)
Business Services - FEATURES OF SERVICES
Business services are essential and indispensable to the smooth flow of trade and industry.
Examples of business services are:
- Banking
- Insurance
- Transport
- Warehousing
- Communication
Types Of Services
1. Social Services: Provided voluntarily to achieve certain goals e.g. health care and education services provided by NGOs.
2. Personal Services: Services which are experienced differently by different customers.
e.g. tourism, restaurants etc.
3. Business Services: Services used by business enterprises for the conduct of their activities.
e.g. Banking, Insurance, communication, warehousing and transportation.
CBSE Class 8 - कक्षा ८ हिंदी - अपठित गद्यांश (#cbseNotes)
CBSE Class 8 - कक्षा ८ हिंदी - अपठित गद्यांश
दिए गए अपठित गद्यांश को ध्यानपूर्वक पढ़ कर पूछे गए प्रश्नों का उत्तर दीजिये।
CBSE Class 8 - Maths - Square and Square Roots - Worksheet (#cbseNotes)
Square and Square Roots - Worksheet
Q1. Find the Pythagorean triplets whose one member is:
a) 8 b) 12
Q2. Is 2352 is a perfect square number? If not, find the smallest multiple of 2352 which is a perfect square. Find the square root of the new number.
Q3. Find the smallest square number that is divisible by each of the numbers 8, 15, 20.
Q4. There are 2401 students in a school P.T. teacher wants them to stand in rows and columns such that number of rows is equal to the number of columns. Find the number of rows.
Wednesday, 6 September 2017
Learn English Vocabulary From News Papers - September 6 2017 (Day 14)
Learn English Vocabulary From News Papers - September 6 2017 (Day 14)
The Indian Express
Sanitisation
Crackdown on Dera soon as HC allows sanitisation
meaning: the act of making something clean, making something germ-free (स्वच्छता)
Examples:
1. The sanitisation process used by medical staff in not fool proof.
2. After the terrorist attack, the shopping mall has been closed for sanitisation.
CBSE Class 11 - Physics - Centre of Mass and Rotational Motion (Assignment) (#cbseNotes)
CENTRE OF MASS AND ROTATIONAL MOTION (ASSIGNMENT)
1. Two bodies of masses 0.5 kg and 1 kg are lying in XY plane at (-1,2) and (3,4) respectively. What are the co-ordinates of the centre of mass?
Answer: 5/3, 10/3
2. Three points masses of 1 kg, 2 kg and 3 kg lie a (1,2), (0,-1) and (2,-3) respectively. Calculate the co-ordinates of the centre of mass of the system.
Answer: 7/6, -3/2
3. Three identical spheres each of radius r, and mass m are placed touching each other on a horizontal floor. Locate the position of centre of mass of the system.
Answer: r, r/√3
4. Two particles of mass 2 kg and 1 kg are moving along the same line with speeds 2m/s and 5m/s respectively. What is the speed of the centre of mass of the system. if both the particles are moving
(a) in same direction
(b) in opposite direction?
Answer: 3m/s, 1/3 m/s in the direction of 1 kg
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