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Snell's Law

If the light ...

Question

If the light moving in a straight line bends by a small but fixed angle, it may be a case of
$(i)$ reflection
$(i i)$ refraction
$(i i i)$ diffraction
$(i v)$ dispersion

only

(i)

and

(i i)

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(i i)

and

(i i i)

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(i)

(i i)

and

(i v)

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only

(i v)

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Solution

The correct option is A only $(i)$ and $(i i)$
The bending of light rays by a small angle can be due to reflection or refraction, which can be observed in case of diamond and glass slab respectively.

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Similar questions

Select the correct alternative :

(a) The speed of light in air or vacuum is :

(i) $3 \times 10^{8} m s - 1$

(ii $2.25 \times 10^{8} m s^{- 1}$

(iii) $3.32 m s^{- 1}$

(iv) $2.0 \times 10^{8} m s^{- 1}$

(b) A ray of light moving from an optically rarer to a denser medium :

(i) bends away from the normal

(ii) bends towards the normal

(iii) remains undeviated

(iv) none of the above.

(i) angle of deviation

(ii) angle of incidence

(iii) angle of refraction

(iv) angle of emergence.

(d) The property of splitting of white light into its seven constituent colours is known as :

(i) rectilinear propagation

(ii) refraction

(iii) reflection

(iv) dispersion.

(e) The seven colours in the spectrum of sunlight in order, are represented as :

(i) VIBGYOR (ii) VIGYBOR

(iii) BIVGYOR (iv) RYOBIVG

(f) A ray of light passing through centre of curvature of a spherical mirror, after reflection :

(i) passes through the focus

(ii) passes through the pole

(iii) becomes parallel to the principal axis

(iv) retraces its own path.

(g) If the radius of curvature of a concave mirror is 20 cm, its focal length is :

(i) 10 cm (ii) 20 cm

(iii) 40 cm (iv) 80 cm.

(h) The image formed by a convex mirror ix :

(i) erect and diminished

(ii) erect and enlarged

(iii) inverted and diminished

(iv) inverted and enlarged.

(i) The image formed by a concave mirror is of the same size as the object, if the object is placed :

(i) at the focus

(ii) between the pole and focus

(iii) between the focus and centre of curvature

(iv) at the centre of curvature.

(j) A convex mirror is used :

(i) as a shaving mirror

(ii) as a head mirror by a dentist

(iii) as a rear view mirror by a driver

(iv) as a reflector in torch.

Ans. (a)-(i), (b)-(ii), (c)-(iii), (d)-(iv), (e)-(i), (f)-(iv), (g)-(i), (h)-(i), (i)-(iv), (j)-(iii)

Q. Question 3
Which of the following statements are correct?
(i) Sound is produced by vibrations.
(ii) Sound requires a medium for propagation.
(iii) Light and sound both require a medium for propagation.
(iv) Sound travels slower than light.

(a) i, ii and iv only
(b) i and ii only
(c) i, ii and iii only
(d) ii, iii and iv only

Q. Question 3
Which of the following statements are correct?
(i) Sound is produced by vibrations.
(ii) Sound requires a medium for propagation.
(iii) Light and sound both require a medium for propagation.
(iv) Sound travels slower than light.

(a) i, ii and iv only
(b) i and ii only
(c) i, ii and iii only
(d) ii, iii and iv only

Match the following:

$\begin{matrix} (i) & Can have variable composition of constituent elements & (A) & Compound (i i) & ______ is new substance formed due to reaction of two constituent elements & (B) & Mixture (i i i) & Constituent elements can be separated easily & (C) & Element (i v) & Can be separated only by chemical or electrochemical reactions (v) & Composition is always fixed (v i) & Shows properties of constituent elements \end{matrix}$
The correct pairs are:-

Q. Question 6
Which of the following are physical changes?
(i) Melting of iron metal
(ii) Rusting of iron
(iii) Bending of an iron rod
(iv) Drawing a wire of iron metal

(a) (i), (ii) and (iii)
(b) (i), (ii) and (iv)
(c) (i), (iii) and (iv)
(d) (ii), (iii) and (iv)

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If the light moving in a straight line bends by a small but fixed angle, it may be a case of(i) reflection(ii) refraction(iii) diffraction(iv) dispersion

The correct option is A only (i) and (ii)The bending of light rays by a small angle can be due to reflection or refraction, which can be observed in case of diamond and glass slab respectively.

If the light moving in a straight line bends by a small but fixed angle, it may be a case of
$(i)$ reflection
$(i i)$ refraction
$(i i i)$ diffraction
$(i v)$ dispersion

The correct option is A only $(i)$ and $(i i)$
The bending of light rays by a small angle can be due to reflection or refraction, which can be observed in case of diamond and glass slab respectively.