The speeds of red light and yellow light are exactly same
(a) in vacuum but not in air
(b) in air but not in vacuum
(c) in vacuum as well as in air
(d) neither in vacuum nor in air.
1 Answers
Talk Doctor Online in Bissoy App
For three events A, B and C, P(Exactly one of A or B occurs) = P(Exactly one of B or C occurs) = P(Exactly one of C or A occurs) = 1/4
Solution: P(A) + P(B) – 2P (A ∩ B) = 1/4 P(B) + P(C) – 2P(B ∩ C) = 1/4 P(A) + P(C) – 2P(A ∩ C) = 1/4 P (A ∩ B ∩ C) = 1/16 Therefore, P(A) +...
1 Answers 1 views
For three events A, B and C, P(Exactly one of A or B occurs)=P(Exactly one of B or C occurs)=P(Exactly one of C or A occurs)=1/4
P(A) + P(B) – 2P (A ∩ B) = 1/4 P(B) + P(C) – 2P(B ∩C) = 1/4 P(A) + P(C) – 2P(A ∩ C) = 1/4 P (A ∩ B ∩ C)...
1 Answers 1 views
In monohybrid cross of red and white flower, Mendel got only red flower. On setting the F1 plants having red flower
On crossing red and white flower only red colour flower appeared in the F1 generation. But the white colour flower again appear in the F2 generation which is raised out...
1 Answers 1 views
Light enters from air into glass having refractive index 1.50. What is the speed of light in glass? The speed of light in vacuum is 3 x 108 ms-1.
Given,n=1.5 and the speed of light in vacuum, c = 3x 108 ms-1. We know that the refractive index is given by the expression n =c/v where c is the...
1 Answers 1 views
Two bullets are fired simultaneously, horizontally and with different speeds from the same place. Which bullet will hit the ground first ?
(c) both will reach simultaneously Explanation: The component of vertical velocity will be the same for both bullets, so both will reach the ground simultaneously.
1 Answers 1 views
A light wave can travel (a) in vacuum (b) in vacuum only (c) in a material medium
(a) in vacuum (c) in a material medium EXPLANATION: The light is an electromagnetic wave that can travel in a vacuum as well as in a transparent material medium.
1 Answers 1 views
Which of the following types of light are strongly absorbed by plants? (a) Violet and orange (b) Blue and red (c) Indigo and yellow
(b) Photosynthesis occurs between wavelengths of about 400 nm and 750 nm. Red and blue colour wavelength is categories in this wavelength. So, plants absorb these colours. Photosynthesis does not...
1 Answers 1 views
On another planet, the local terminology for earth, water, light, air and sky are 'sky', 'light', 'air', 'water' and 'earth' respectively.
(d) earth → sky water → light light → air air → water sky → earth If someone is thirsty, then he would drink water. Now, water on that planet means light, so he would drink light.
1 Answers 1 views
P, Q, R and S are four men. P is the oldest but not the poorest. R is the richest but not the oldest. Q is older than S but not than
(b) Q > S, P > Q, R > Q Age: As, Q > S, P > Q, R > Q Also, P is the oldest. ∴ P > R > Q >...
1 Answers 1 views
There are some balls of red, green and yellow colour lying on a table. There are as many red balls as there are yellow balls.
(b) According to question R = y and y = 2G ∴ R = 2G Hence, the number of red balls is double the number of green balls.
1 Answers 1 views