The motion of a car is represented by the graph given here .It is a velocity-time graph

(1) Identify the type of motion from the following

(A) car is not in motion
(B) car is moving with uniform velocity
(C) car is moving with uniform acceleration
(D) None of the above

Ans:- (B) car is moving with uniform velocity

(2) What does the slope of the graph represent?(A) acceleration
(B) velocity
(C) force
(D) momentum

Ans:- (B) velocity

(3) What kind of graph do we obtain if we plot position - time graph of the car(A) Straight line parallel to X axis
(B) Straight line parallel to Y axis
(C) parabola
(D) Zig Zag curve

Ans:- Zig Zag curve

(4) What quantity do we obtain if we calculate area under the given graph?(A)displacement(B) velocity(C) acceleration(D) None of the above

Ans:- velocity

(5) From the graph, the acceleration of the car will be(A) 4m/s(B) 4m(C) 4m/s2(D) zero

Ans:- (C) 4m/s2

​Find the value of p for which the points are colinear if (7,-2),(5,1),(3,p)

 Solution:-

Find the value of p for which the points are colinear if (7,-2),(5,1),(3,p)

The degree of x2 – 5x + 2 = x3 is:​

 x2 – 5x + 2 = x3

x2 - 5x + 2 - x3 = 0

-x3 + x2 - 5x + 2 = 0

If we change the sign of these equation then,

x3 - x2 + 5x - 2 = 0

Ans:- 3  

Note: The degree is the value of greatest exponent of any expression.

A body is falling freely, the total energy of the body as it falls

 (A) Increases

(B) First decrease then increase

(C) Remains same 

(D) First increases then decreases

Ans:- (C) Remains same

The money receivable from a customer, to whom business sold goods on credit is called

 a) Creditor

 b) Debtor

 c) Wholesaler

 d) Retailer​

 Ans:- b) Debtor

Find A: C, if A:B = 7:8 and B:C = 16:21

 Solution:-

A:B = 7:8   is written as   A/B = 7/8

B:C = 16:21 is written as  B/C = 16/21

We have to find A:C = ? 

A:C is written as  A/C

A/C = A/B × B/C

A/C = 7/8 × 16/21

A/C = 2/3

A:C = 2:3

Ans:- A:C = 2:3

Add the following terms -2mm, 4 mn, - 6 mn

=  mn - 2mm + 4mn - 6mn

=  -2mm + mn (1 + 4 - 6)

=  -2mm + mn (-1)

=  -2mm - mn

Ans:-  -2mm - mn

The product of the place value of 5 and 6 in 70560

Option:

1) 30

2) 300

3) 3000

4) 30000

Ans:- 4) 30000

Explanation:- Place value of 5 = 500

         

                      Place value of 6 = 60

                      Product of Place value = 500 × 60

                                                   

                                                        Ans   = 30000

Write true or false. Correct and rewrite the statement if false

 Write true or false. Correct and rewrite the statement if false: 

a) Oxygen produced during photosynthesis comes from Carbon dioxide:- True

b) Connective tissue provides insulation to the animal body:- True

c) Adding iodine solution to the leaf removes chlorophyll from it:- True

d) In a dicot leaf, both upper and lower epidermis contains stomata:- False

Statement:- Becausce in dicot leaf the stomata are found only on the underside of the leaf

e) Spongy mesophyll cells perform the maximum amount of photosynthesis:- False 

Statement:- Becausce spongy mesophyll cells do not contain as many chloroplasts as those found in palisade cells.