An object is placed 20 cm in front of a plane mirror. The mirror is moved 2 cm towards the object. The distance between the position of the original and final images seen in the mirror is:
Answers
Answer:
6
4
(ii) 1 head, (ui) O head?
3. A dice is thrown 100 times and the outcomes are noted as given
Outcome
5
1
3
2
Frequency
9
23
21
15
14
18
When a dice is thrown at random, what is the probability of getting a (i) 3, (1) 6, (111) 4. (iv) 1?
On Indies it was found that 36 like coffee while 64 dislike it.
robability that the chosen lady step by step
Case study questions are compulsory. Attempt all sub parts of each question. Each subpart carries 1 mark. A certain parade has been planned to be organized in the form of the following two groups: (1) Group A having 624 soldiers behind a band of 32 numbers. (2) Group B having 468 soldiers behind 228 bikers. These two groups are to march in the same number of columns.
Captionless Image
Option 1
8.1) What is the maximum number of columns in which members of Group A can march *
a) 32
b) 16
c) 8
d) 4
8.2) What is the maximum number of columns in which Group A and Group B together can march *
a) 8
b) 6
c) 4
d) 2
8.3) What should be subtracted from the number of group B soldiers and number of bikers so that their maximum number of columns is equal to the maximum number of columns of Group A *
a) 2 soldiers and 2 bikers
b) 4 soldiers and 4 bikers
c) 4 soldiers and 2 bikers
d) 2 soldiers and 4 bikers
8.4) What is the maximum number of columns in which members of Group B can
a) 16
b) 12
c) 8
d) 4The sum of first n terms of an AP is (5n - n²). The nth term of the AP is
(a) (5 - 2n)
(b) (6 - 2n)
(c) (2n-5)
(d) (2n-6)A rectangular sheet of paper is 12 cm long and 10 cm wide.
20 - 2 = 18
18 × 2 = 36
so the total distance between the original and final image is 36 cm
Step-by-step explanation:
As we all know that in plane mirror show equal distance in the place where the object is kept for ex: an object is placed 10 cm away in front of a plane mirror then it will be 10 × 2 = 20 cm
so the total distance will in between plane mirror and orignal image will be 20 cm