#prashnmanch

Prayaas Prashna Manch Prayaas Ek Pahal is here with one more open doubt clearing session for class 10th Mathematics & Science students. To join this session students just have to register on the given below link. https://prayaasekpahal.wordpress.com/contact/ prayassekpahal #doubtsession #grade10th #board2021 #prashnmanch #register

Prayaasekpahal

Prayaas team is here with a new initiative for class X Students.

Notebook !!!

Here we will share Crisp & Concise notes of different subjects, prepared by experts.

Share, learn and succeed.

prayassekpahal #notebook #classX2020 #summary #learning #board2021

Prayaasekpahal

Prayaas team is here with a new initiative for class X Students.

Notebook !!!

Here we will share Crisp & Concise notes of different subjects, prepared by experts.

Share, learn and succeed.

prayassekpahal #notebook #classX2020 #summary #learning #board2021

Prayaasekpahal

Prayaas team is here with a new initiative for class X Students.

Notebook !!!

Here we will share Crisp & Concise notes of different subjects, prepared by experts.

Share, learn and succeed.

prayassekpahal #notebook #classX2020 #summary #learning #board2021

Prayaasekpahal

Friends . We are back with new initiative under Prashnamanch

After Timekeeper Science test series.

Now we are going conduct Timekeeper revision & discussion classes for class X- Mathematics.

Hurry!!!!

Limited seats and time .

Register now.

Team prayaas – ek pahal

prayassekpahal #timekeepertestseries #mathematics #revision #doubts #board2021

Timekeeper test series

Answer- 18

i-

Convex mirror is used as rear view mirror of a car

Justification:

The reason behind using the convex mirror is-

It produces an erect image of the object and

It produces greater depth of field.

ii-

Magification of mirror:

It is the ability of a mirror to enlarge the size of object image.

Mathematically, it is expressed as the ratio of…

Prayaas-ek pahal

Answer- 17

i- (d)

ii- (b)

Prashnamanch

Answer (iii)

Prashnamanch

iv-

Spherical or curved Mirrors are of two type 1. Convex mirror and

Concave mirror

Application of Convex mirror:

• Used as rear view mirror in vehicles.

• Also used in blind corners, sharp bend & driveways.

Application of Concave mirror:

• Commonly used in torches search light…

framesunlimited

Answer- 16

i-

Diffraction is a phenomenon of bending of light at the corners of an opaque object.

It can be differentiated from reflection on the basis of path followed by the ray of light. Which is straight in case of reflection the whereas deviates in diffraction.

(i)

ii-

The value of focal length of a plane mirror is infinite.

iii-

Laws of reflection…