Question

the following transactions in the purchase book or Grove
purchase account
2
Purchased from Tieltock Lid
TV se s Janata Model ( 2.500
3 Delux Model) < 4.000
Trade Discount 15
Purchased from Bajaj & Co.
Electric Irons 10 w 50
Table Lamps $ @ 25
Room Heaters 5 @ 60,
Trade Discount 20%
(OU, March 2010) (now 21.568​

Answer 1

Explanation:

For normal incidence on a plane mirror identify which of these statements are true --

(I) Both the angles of incidence and reflection are 0 degree .

(II) Both the angles of incidence and reflection are 90 degree .

(III) The angles that both the incident ray and the reflected ray make with the mirror surface are 0 degree .

(IV) The angles that both the incident ray and the reflected ray make with the mirror surface are 90 degree ..

A) Only (I) is true .

B) Only (II) is true .

C) Both (I) and (III) are true .

D) Both (I) and (IV) are true ✔