Machines — Physics STD 10 — Question

The physical conditions of a conductor remaining same, the current flowing through it is directly proportional to the potential difference at its ends. The above law was stated by:

Greater the optical density __________ lateral displacement.

Which of the following has the highest refractive index

The C.G of a regular object would lie ______________ .

When a body moves in a circular path, outward force is called a _______________ .

Uniform circular motion has ______________ .

In a household electric circuit all appliances are connected in:

Match the following:

Column I	Column II
I. Permanent damage to the ears	(i) Greater than 120 dB
II. Safe limit of level of sound	(ii) 0-80 dB
III. Soothing sensation	(iii) 10-30 dB
IV. Lowest level of loudness	(iv) 0 dB

The most suitable material for making the core of an electromagnet __________ .