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QThe power of concave lens of focal length 1mm is 1.0.01D 2.100D 3.0.001D 4.1000D QWhen a plane mirror is rotated through a certain angle the reflected ray turns through a twice or much and size of image 1.becomes twice the size of object 2.becomes half the size of object 3.becomes negligibly small 4.remains same as size of object QDuring anaerobic alcoholic fermentation by yeast alcohol is formed 1.in yeast cell's vacuole 2.in yeast cell mitochondrion 3.outside the yeast cell 4.within the yeast cell Q what is nature of food in our stomach and what is dont for pancreatic juice to act? 1 Acidic,made more acidic 2 Acidic made alkaline 3 Alkaline made acidic 4 Alkaline made more alkaline
The relation R = 2f holds true for
a. Concave mirrors only
b. Convex mirrors only
c. All spherical mirrors
d. Lens as well as for all spherical mirrors
A hole is made in a convex lens. Then :
(A) a hole appears in the image
(B) image size decreases
(C) image intensity decreases
(D) No change Please give the correct option .
Pls dont ask to post in threads🙏
QThe power of concave lens of focal length 1mm is
1.0.01D
2.100D
3.0.001D
4.1000D
QWhen a plane mirror is rotated through a certain angle the reflected ray turns through a twice or much and size of image
1.becomes twice the size of object
2.becomes half the size of object
3.becomes negligibly small
4.remains same as size of object
QDuring anaerobic alcoholic fermentation by yeast alcohol is formed
1.in yeast cell's vacuole
2.in yeast cell mitochondrion
3.outside the yeast cell
4.within the yeast cell
Q what is nature of food in our stomach and what is dont for pancreatic juice to act?
1 Acidic,made more acidic
2 Acidic made alkaline
3 Alkaline made acidic
4 Alkaline made more alkaline
1.combination
2.decomposition
3.double displacement
4.displacement
Q2.Peristalic movement refers to
1.contraction and relaxation of heart
2.contraction and expansion of heart
3.contraction and expansion of walls of food pipe
4.movement of food throughout the body
Reason : The scattering of the blue component of the white sunlight by tiny molecules is responsible for blue appearance of ocean .
A) Both A and R are true , and R is the correct explaination of the assertion.
B) Both A and R are true, but R is not the correct explaination of assertion.
C) A is true but R is false.
D) A is false but R is true .
The relation R = 2f holds true for
a. Concave mirrors only
b. Convex mirrors only
c. All spherical mirrors
d. Lens as well as for all spherical mirrors
A hole is made in a convex lens. Then :
(A) a hole appears in the image
(B) image size decreases
(C) image intensity decreases
(D) No change
Please give the correct option .