NEET Questions - Physics

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Physics Chemistry Botany Zoology

Question bank:

The velocity of light is maximum in a medium of

Diamond
Water
Glass
Vacuum

"Bhautik" runs towards a plane mirror with a speed of $20 ms^{–1} $, what is the speed of his image ?

$ 45 ms^{-1} $
$ 20 ms^{-1} $
$ 15 ms^{-1} $
$ 7.5 ms^{-1} $

A ray of light is incident at an angle $ 30^\circ $ on a mirror, The angle between normal and reflected ray is ............

$ 15^\circ $
$ 30^\circ $
$ 45^\circ $
$ 60^\circ $

The no. of images formed between two parallel plane mirror are

$ \infty $
0
180
360

To get five images of a single object one should have two plane mirrors at an angle of.........

$ 36 ^\circ $
$ 72 ^\circ $
$ 180 ^\circ $
$ 302 ^\circ $

If a glass rod is immersed in a liquid of the same refractive index, then it will

appear bent
appear longer
disappear
appear shorter

For four different transparent medium $ n_{41} \times n_{32} \times n_{21} =$

$ { 1 \over n_{41} } $
$ n_{41} $
$ n_{14} $
$ { 1 \over n_{14}} $

A Plane mirror produces a magnification of

0
+1
-1
$ \infty $

A convex lens forms a real image of an object for it s two different positons on a screen if hight of the image in both cases be 16 cm and 4 cm then height of the object is ..........cm

-4
4
-8
8

Two thin lenses of focal lengths $ f_1 and f_2 $ are coaxially placed in contact with each other then, the power of combination is ............

$ { f_1 + f_2 \over 2 } $
$ \sqrt { f_1 \over f_2 } $
$ { f_1 f_2 \over f_1 + f_2} $
$ {f_1 + f_2 \over f_1 f_2 } $

If thin prism of $ 5 ^\circ $ gives a deviation of $ 2 ^\circ $ then the refractive index of material of prism is

1.4
1.5
1.6
1

It is difficult to see through the fog because

light is scattered by the doplets in the fog.
fog absorbs light.
refractive index of fog is infinity.
light suffers total internal reflection.

what is the time taken in seconds to cross a glass plate of thickness 6 mm and = 2.0 by light ?$ 8 \times 10^

$ 8 \times 10^{-11 } $
$ 4 \times 10^{-11 } $
$ 2 \times 10^{ 11 } $
$ 16 \times 10^{-11 } $

Read the following quetions and choose if_ Assertion : Focal lengh of a lens for red colour is smaller than its focal length for violet colour Reason : is because $n_r \gt n_v $

both assertion and reason are true but reason do not explain the assertion.
both assertion and reason are true and the reason is correct explanation of the assertion.
Assertion is true but the reason are false.
both assertion and reason are false.

A glass slab (n =1.5 ) of thikness 9 cm is placed over a written paper what is the Shift in the latters ?

6 cm
3 cm
2 cm
0 cm

NEET Physics Questions: Optics