Ray Optics Test

Result

Ray Optics Test - 40

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Weekly Quiz Competition

Question 1
4 / -1

The apparent depth of water in cylindrical water tank of diameter 2 R cm is reducing at the rate of x cm/minute, when water is being drained out at a constant rate. The amount of water drained in cc per minute is (n₁ = refractive index of air, n₂ = refractive index of water)

A

B

C

D

Solution
Question 2
4 / -1

A candle of diameter d is floating on a liquid in a cylindrical container of diameter D (>> d) as shown in Fig. If it is burning at the rate of 2 cm/hour, then the tip of the candle will

A
remain at the same height

B
fall at the rate of 1 cm/hour

C
fall at the rate of 2 cm/hour

D
go up at the rate of 1 cm/hour
Question 3
4 / -1

The magnification of the image when an object is placed at a distance x

A

B

C

D

Solution

Question 4
4 / -1

The velocity of light is maximum in a medium of

A
diamond

B
water

C
glass

D
vacuum

Question 5
4 / -1

A light of wavelength 320 nm enters in a medium of refractive index 1.6 from the air of refractive index 1.0 The new wavelength of light in the medium will be ― nm.

A
520

B
400

C
320

D
220

Solution

Question 6
4 / -1

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

A
45 ms^–1

B
20 ms^–1

C
15 ms^–1

D
7.5 ms^–1

Question 7
4 / -1

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

A
15^o

B
30^o

C
45^o

D
60^o

Question 8
4 / -1

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

A
∞

B
0

C
180

D
360

Solution

Question 9
4 / -1

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

A
36^o

B
72^o

C
180^o

D
302^o

Question 10
4 / -1

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

A
appear bent

B
appear longer

C
disappear

D
appear shorter

User

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Re-Attempt Solution Weekly Quiz Competition

Ray Optics Test - 40

Result

Ray Optics Test - 40

Score

-

Rank

-

SHARING IS CARING

Question 1

Solution

Question 2

remain at the same height

fall at the rate of 1 cm/hour

fall at the rate of 2 cm/hour

go up at the rate of 1 cm/hour

Question 3

Solution

Question 4

diamond

water

glass

vacuum

Question 5

520

400

320

220

Solution

Question 6

45 ms–1

20 ms–1

15 ms–1

7.5 ms–1

Question 7

15o

30o

45o

60o

Question 8

∞

0

180

360

Solution

Question 9

36o

72o

180o

302o

Question 10

appear bent

appear longer

disappear

appear shorter

User

Question Analysis

My Perfomance

Score

-

Rank

-

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45 ms^–1

20 ms^–1

15 ms^–1

7.5 ms^–1

15^o

30^o

45^o

60^o

36^o

72^o

180^o

302^o