Q9 of 30 Page 1

The laws of reflection hold true for:

(a) plane mirrors only (b) concave mirrors only


(c) convex mirrors only (d) all reflecting surfaces


OR


When an object is kept within the focus of a concave mirror, an enlarged image is formed behind the mirror. this image is:


(a) real (b) inverted


(c) virtual and inverted (d) virtual and erect


D

The law of reflection holds true for all the reflecting surfaces.


OR


(D)


When an object is kept within focus (in between focus and pole) the nature of the image formed is virtual, erect and magnified.


More from this chapter

All 30 →
7

Baking soda is a mixture of :

 8

The chemical formula for plaster of paris is :

 10

At the time of short circuit, the electric current in the circuit:

(a) vary continuously (b) does not change


(c) reduces substantially (d) increase heavily


OR


Two bulbs of 100 W and 40 W are connected in series. The current through the 100 W bulb is 1 A. The current through the 40 W bulb will be:


(a) 0.4 A (b) 0.6 A


(c) 0.8 A (d) 1 A


 11

Which one of the following is responsible for the sustenance of underground water?