In an experiment to trace the path of a ray of light passing through a glass slab, four students tabulated their observations as given below: Students → A B C D ∠ i 30 ° 30 ° 30 ° 30 ° ∠ r 18 ° 20 ° 17 ° 21 . 5 ° ∠ e 32 ° 32 . 5 ° 30 ° 34 . 5 ° Which student performed the experiment most correctly and why?

For refraction from rarer to a denser and then from denser to a rarer medium angle of incidence ∠ i is slightly greater than angle of refraction ∠ r and equal to angle of emergence ∠ e . Therefore, student C performed the experiment most correctly.

MEDIUM

10th CBSE

IMPORTANT

Earn 100

What are the sources of error in performing the experiment to determine the focal length of a convex lens by obtaining an image of a distant object on a screen?

Important Questions on Light - Reflection and Refraction

MEDIUM

10th CBSE

IMPORTANT

Science Part-I NEW ERA PHYSICS Textbook for Class X>Chapter 4 - Light - Reflection and Refraction>PRACTICAL SKILLS BASED QUESTIONS>Q 21

What is the correct method of placing the pins

P_{3}

and

P_{4}

in the experiment to trace the path of a ray of light through a rectangular glass slab using pins

P_{1}, P_{2}, P_{3}

and

P_{4}

MEDIUM

10th CBSE

IMPORTANT

Science Part-I NEW ERA PHYSICS Textbook for Class X>Chapter 4 - Light - Reflection and Refraction>PRACTICAL SKILLS BASED QUESTIONS>Q 22

Give the diagram which represents the correct angle of incidence

i

, angle of refraction

r

and angle of emergence

e

for the experiment tracing the path of light passing through a rectangular glass slab.

MEDIUM

10th CBSE

IMPORTANT

Science Part-I NEW ERA PHYSICS Textbook for Class X>Chapter 4 - Light - Reflection and Refraction>PRACTICAL SKILLS BASED QUESTIONS>Q 23

What are the apparatus required in performing the experiment tracing the path of a ray of light passing through a rectangular glass slab?

MEDIUM

10th CBSE

IMPORTANT

Science Part-I NEW ERA PHYSICS Textbook for Class X>Chapter 4 - Light - Reflection and Refraction>PRACTICAL SKILLS BASED QUESTIONS>Q 24

A student performs the experiment on tracing the path of a ray of light through a rectangular glass slab for four different angles of incidence. He measures the angle of incidence

∠ i

, angle of refraction

∠ r

and angle of emergence

∠ e

for all his observations. What would he find in all the cases?

MEDIUM

10th CBSE

IMPORTANT

Science Part-I NEW ERA PHYSICS Textbook for Class X>Chapter 4 - Light - Reflection and Refraction>PRACTICAL SKILLS BASED QUESTIONS>Q 27

In an experiment to trace the path of a ray of light passing through a glass slab, four students tabulated their observations as given below:

Students $\to$	A	B	C	D
$∠ i$	$30 °$	$30 °$	$30 °$	$30 °$
$∠ r$	$18 °$	$20 °$	$17 °$	$21.5 °$
$∠ e$	$32 °$	$32.5 °$	$30 °$	$34.5 °$

Which student performed the experiment most correctly and why?

MEDIUM

10th CBSE

IMPORTANT

Science Part-I NEW ERA PHYSICS Textbook for Class X>Chapter 4 - Light - Reflection and Refraction>PRACTICAL SKILLS BASED QUESTIONS>Q 29

What precautions should be taken for the experiment to trace the path of a ray light passing through a glass slab?

MEDIUM

10th CBSE

IMPORTANT

Science Part-I NEW ERA PHYSICS Textbook for Class X>Chapter 4 - Light - Reflection and Refraction>PRACTICAL SKILLS BASED QUESTIONS>Q 30

A student recorded the following sets of observations during the experiment to trace the path of a ray of light passing through a glass slab.

S. No.	$∠ i$	$∠ r$	$∠ e$
I	$30 °$	$19 °$	$30 °$
II	$40 °$	$26 °$	$40 °$
III	$50 °$	$37 °$	$51 °$
IV	$60 °$	$35 °$	$59 °$

Which is the incorrect observation and why?

MEDIUM

10th CBSE

IMPORTANT

Science Part-I NEW ERA PHYSICS Textbook for Class X>Chapter 4 - Light - Reflection and Refraction>PRACTICAL SKILLS BASED QUESTIONS>Q 31

Which is the best set-up for tracing the path of a ray of light through a rectangular glass slab?

What are the sources of error in performing the experiment to determine the focal length of a convex lens by obtaining an image of a distant object on a screen?

Important Questions on Light - Reflection and Refraction

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