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American National Curriculum

Grade 12

Grade 12 Questions asked by Filo students

Views: 5,073

Larger aperture of objective lens in an astronomical telescope

increases the resolving power of telescope.
decreases the brightness of the image.
increases the size of the image.
decreases the length of the telescope.

Topic:

Optics

View solution

Views: 5,058

A biconvex lens of glass having refractive index

1.47

is immersed in a liquid. It becomes invisible and behaves as a plane glass plate. The refractive index of the liquid is

$1.47$
$1.62$
$1.33$
$1.51$

Topic:

Optics

View solution

Views: 5,605

For a glass prism, the angle of minimum deviation will be smallest for the light of

red colour.
blue colour.
yellow colour.
green colour.

Topic:

Optics

View solution

Views: 5,738

Larger aperture of objective lens in an astronomical telescope

increases the resolving power of telescope.
decreases the brightness of the image.
increases the size of the image.
decreases the length of the telescope.

Topic:

Optics

View solution

Views: 5,318

For a glass prism, the angle of minimum deviation will be smallest for the light of

red colour.
blue colour.
yellow colour.
green colour.

Topic:

Optics

View solution

Views: 5,532

Larger aperture of objective lens in an astronomical telescope

increases the resolving power of telescope.
decreases the brightness of the image.
increases the size of the image.
decreases the length of the telescope.

Topic:

Optics

View solution

Views: 5,980

A biconvex lens of glass having refractive index

1.47

is immersed in a liquid. It becomes invisible and behaves as a plane glass plate. The refractive index of the liquid is

$1.47$
$1.62$
$1.33$
$1.51$

Topic:

Optics

View solution

Views: 5,932

For a glass prism, the angle of minimum deviation will be smallest for the light of

red colour.
blue colour.
yellow colour.
green colour.

Topic:

Optics

View solution

Views: 5,387

Larger aperture of objective lens in an astronomical telescope

increases the resolving power of telescope.
decreases the brightness of the image.
increases the size of the image.
decreases the length of the telescope.

Topic:

Optics

View solution

Question 10

Views: 5,216

A biconvex lens of glass having refractive index

1.47

is immersed in a liquid. It becomes invisible and behaves as a plane glass plate. The refractive index of the liquid is

$1.47$
$1.62$
$1.33$
$1.51$

Topic:

Optics

View solution

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Question 11

Views: 5,227

For a glass prism, the angle of minimum deviation will be smallest for the light of

red colour.
blue colour.
yellow colour.
green colour.

Topic:

Optics

View solution

Question 12

Views: 5,706

time when we turn ON the limits. Steps to set the limits The steps to set the limits are listed below:

Open the AutoCAD software.
Type LIMITS on the command line or command prompt.
Press Enter or spacebar.
Write the coordinates of the lower-left corner. For example, $(0, 0)$ . The coordinates for the lower-left are usually the coordinates of origin for better understanding. We can also modify the coordinates according to the requirements.
Press Enter.
Write the coordinates of the upper-right corner. For example, $(200, 200)$ .

Topic:

Mechanics

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Question 13

Views: 5,266

(3) A stromt gal varumeler is cautu

(7) Ine mathemadicat form of kection (8) Magnetic fielel dure to corrent of soreniod is (9) A bridge rectifier consist nombers of diodes (B) fill in the blan

k

The mass of necotron is $1.67493 \times 1 0^{- 27} kg$
The foctor $\frac{h}{m oc}$ is called
he value of zer is
Forword Cumect is dueto

Topic:

Electrostats

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Question 14

Views: 5,635

Magnetic field due to current of Soleniod is (ix) A bridge rectifier consist number of diodes. (b). Fill in the blanks.

The mass of neutron is
The factor $\frac{h}{m oc}$ is called
The value of $2 ev$ is
Forward current is due to

Topic:

Electrostats

View solution

Question 15

Views: 5,407

Example 4.1 A straight wire of mass

200 g

1.5 m

carries a current of 2 A. It is suspended in mid-air by a uniform horizontal magnetic field B (Fig. 4.3). What is the magnitude of the magnetic field?

Topic:

Magnetism, EMI & AC

View 5 solutions

Question 16

Views: 5,590

1.8 A

l e f t (R = 1.1 \times 1 0^{- 7} m^{- 1}, b = 1 i g h t .

5/33 =

$Co, Z = 27$
Iron, Z = 26
$Mn, Z = 25$
$Ni, Z = 28$

Topic:

Magnetism, EMI & AC

View solution

Question 17

Views: 5,637

The spread in colours in a rainbow on sky is primarily due to

dispersion of sunlight [ 2013

Topic:

Optics

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Question 18

Views: 5,129

A body is projected vertically upwards with a velocity of

96 ft / s

. What is the total time for which the body will remain in the air?

$3 s$
$6 s$
$9 s$
$12 s$

Topic:

Electrostats

View solution

Question 19

Views: 5,419

A ball weighing

100 gm

, released from a height of

5 m

, bounces perfectly elastically off a plate. The collision time between the ball and the plate is

0.5 s

. The average force on the plate is approximately.

$3 N$
$2 N$
$5 N$
$4 N$

Topic:

Mechanics

View solution

Question 20

Views: 5,219

i = ρ \in

{(1) explone Gauss theorm? (2) what is electric flun

Topic:

Electrostats

View solution

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