Question

plz solve these questions if you know these are of physics class 10​

Answer 1

Answer:

hope the answers are correct

and also hope it is useful 4 u..

Explanation:

have a good day

Answer 2

Answer:

Explanation:

1.) Chapter:   Electricity

Solution:

This problem can be easily solved using Ohm's law.

Ohm's law states:   V = IR

V      -       Potential difference the terminals of the battery

I        -        Current in the loop

R       -      Resistance of the resistor

If you observe the question:

V = 4 V

I = 100 mA = 100 / 1000 A = 1/10 A

R - Unknown, so let us take it as 'R'

4 = 1/10 R

R = 40 Ω

40 Ω is the resistance

2.) Chapter:    Work, Power and Energy

Solution:

A KWh is a unit of measuring energy. It is, by definition, equal to the energy used by a 1000 watt appliance kept on for 1 hour.

3.) Chapter:     Optics

Solution:

A convex lens produces an erect and enlarged image. A good example is a magnifying glass, which is used to observe objects which are generally difficult to abstractly observe with the naked eye.

4.) Chapter:       Work, Power and Energy

Solution:

The SI unit of Power is the watt, or joule/second.

CGs unit is erg/second

Hope it helps!