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Physics - Science Questions asked by Filo students

Question 1

AR-16-GSC (REGULAR) 18. Vinegar is prepared from

$50% - 60%$ acetic acid in ethanol
$50%$ - $60%$ acetic acid in water
$5% - 8%$ acetic acid in ethanol
$5% - 8%$ acetic acid in water

Topic:

Physics

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Question 2

anknown value to be calculated. Its proper sign will come by itself bro salculatons. Inown values of

u, v

f

can be found by using New Cartesian sign Conventions proper signs of the Another point to be noted is that the mirror formula cartesian Sign Convention for spherical mirrors. ancave mirrors as well as convex mirrors. By using this mirror formula woth type of spherical mirrors nature of the images formed by concave mirrors and convex mirrors Before we do that, we wition and magnification' produced by spherical mirrors and convex mirrors. Before we do that, we will discuss the Linear Mognifieation Produced by Mirb The ize of image formed by anded by Mirrors The size of image formed by a spherical mirror depends on the position of the object from the mirror. The image formed by a spherical mirror can be bigger than the object, equal to the object or smaller than the object. The size of the image relative to the object is given by the linear magnification. This is discussed on the next page.

Topic:

Physics

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Question 3

Ques

1 \Rightarrow

A current of

1 A

is drawin by a filament of an electric bulb, Number of electrons passing through a cross section of the fill flament in 16 seconds would be roughly:- Solution:

Topic:

Physics

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Question 4

We can see the Sun even when it is little below the horizon because of

Reflection of light Usingalaser and refraction of ligh of your teacher.

Topic:

Physics

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Question 5

Project : Using a laser and soap water, study the refraction of light under the guidanc

Refraction of light
Dispersion of light
Absorption of light

Topic:

Physics

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Question 6

7) A hot plate of an electric oven connected to a 220 volt line has two resistance coils

A

and

B

, each of 24 ohm resistance, which may be used separately, in series or in parallel. what are the currents in the three cases? 5 marks

Topic:

Physics

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Question 7

Govida singh Raj... 1 Thinute ago measuring electric current is

Ammeter
Galvanometer
Voltmeter
Potentiometer

Topic:

Physics

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Question 8

The amount of work done in 1 point joules when one unit electric charge moves from one point to another point in an electric circuit is called

Electric Current
Electric Resistance
Electric Conductance
Potential difference

Topic:

Physics

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Question 9

c. The mass and weight of an object on earth are

5 kg

and

49 N

respectively. What will be their values on the moon? Assume that the acceleration due to gravity on the moon is

1/6

th of that on the earth.

Topic:

Physics

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Question 10

Example 10.1 The mass of the earth is

6 \times 1 0^{24} kg

and that of the moon is

7.4 \times 1 0^{22} kg

. If the distance between the earth and the moon is

3.84 \times 1 0^{5} km

, calculate the force exerted by the earth on the moon. (Take

G = 6.7 \times 1 0^{- 11} N m^{2} kg^{- 2}

)

Topic:

Physics

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Question 11

Example

10.7

Relative density of silver is

10.8

. The density of water is

1 0^{3} kg m^{- 3}

. What is the density of silver in SI unit?

Topic:

Physics

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Question 12

4. Determine the equivalent resistance between

A

and

B

in the following circuits.

Topic:

Physics

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Question 13

52. Explain the phenomenon of rainbow formation with the diagram. 53. State the principle, figure, working and uses of an electric motor. 54. Write a short note on fuse.

Topic:

Physics

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Question 14

\leftarrow

electric

r

L λ

1 1. A cell a resistor, a key and ammeter are arranged as shown in the circuit diagrams of Figure12.1. The current recorded in the ammeter will be

maximum in (i)
maximum in (ii)
maximum in (iii)
the same in all the cases

Topic:

Physics

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Question 15

In the following circuits (Figure 12.2), heat produced in the resistor or combination of resistors connected to a

12 V

battery will be

same in all the cases

Topic:

Physics

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Question 16

Electrical resistivity of a given metallic wire depends upon

its length
its thickness
its shape
nature of the material

Topic:

Physics

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Question 17

Acurrent of 1 A is drawn by a fillament of an electric bulb. Number of electrons passing through a cross section of the filiament in 16 seconds would be roughly

$1 0^{20}$
$1 0^{10}$
$1 0^{18}$
$1 0^{22}$

Topic:

Physics

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Question 18

3. Calculate the number of electrons constituting one coulomb of charge. 200

Topic:

Physics

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Question 19

ELECTRICITY 39. In the circuit shown below : The potential difference across the

3Ω

resistor is :

$\frac{1}{9} V$
$\frac{1}{2} V$
$1 V$
$2 V$

Topic:

Physics

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Question 20

ELECTRICITY 39. In the circuit shown below : The potential difference across the

3Ω

resistor is :

$\frac{1}{9} V$
$\frac{1}{2} V$
$1 V$
$2 V$

Topic:

Physics

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Physics - Science Questions asked by Filo students

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