Question

please tell me the answer of this question​

Answer 1

Answer:

If the inner side of the spherical mirror is reflecting, it is called a concave mirror. If the outer side of the spherical mirror is reflecting, it is called a convex mirror. Concave mirrors can form inverted and real images and also virtual and erect images.

Explanation:

Answer 2

Answer:

i)Present continuous:

Formation:Sub+am/is/are+present participle

Example:I am writing a letter.

ii) Present perfect:

Formation:sub+have/has+v3

Example:I have written a letter.

iii) Past continuous:

Formation:sub+was/were+present participle.

Example:I was writing a letter.

iv) Past perfect:

Formation:sub+had+v3(past participle)

Example:I had written a letter

v) Future continuous:

Formation:sub+shall/will+be+present participle

Example:I shall be writing a letter.

vi) Future perfect:

Formation:sub+shall/will+have+v3(past participle)

Example:I shall have written a letter.