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In the figure shown here, what is the equivalent focal length of the combination of lenses (Assume that all layers are thin)? $n_1 = 1.5$, $n_2 = 1.6$, $R_1 = R_2 = 20$ cm
A bullet is fired from a gun at the speed of $280 \text{ m s}^{-1}$ in the direction $30^\circ$ above the horizontal. The maximum height attained by the bullet is ($g = 9.8 \text{ m s}^{-2}$, $\sin 30^\circ = 0.5$)
An electric dipole is placed as shown in the figure. The electric potential (in $10^2$ V) at point $P$ due to the dipole is ($\epsilon_0$ = permittivity of free space and $\frac{1}{4\pi\epsilon_0} = K$)
A very long conducting wire is bent in a semi-circular shape from $A$ to $B$ as shown in figure. The magnetic field at point $P$ for steady current configuration is given by
A bullet from a gun is fired on a rectangular wooden block with velocity $u$. When bullet travels $24$ cm through the block along its length horizontally, velocity of bullet becomes $\frac{u}{3}$. Then it further penetrates into the block in the same direction before coming to rest exactly at the other end of the block. The total length of the block is
Select the incorrect statement:
A normal girl, whose mother is haemophilic marries a male with no ancestral history of haemophilia. What will be the possible phenotypes of the offsprings?
Which of the following statements is not true of two genes that show 50% recombination frequency?
Match Column-I with Column-II: Column-I (a) Smooth muscle (b) Tropomyosin (c) Red muscle (d) Skull Column-II (i) Myoglobin (ii) Thin filament (iii) Sutures (iv) Involuntary
In pea plants, yellow seeds are dominant to green. If a heterozygous yellow-seeded plant is crossed with a green-seeded plant, what ratio of yellow and green-seeded plants would you expect in F1 generation?
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): Mendel's law of Independent assortment does not hold good for the genes that are located closely on the same chromosome. Reason (R): Closely located genes assort independently. In the light of the above statements, choose the correct answer from the options given below:
Match List-I with List-II: List-I A. Axoneme B. Cartwheel pattern C. Crista D. Satellite List-II I. Centriole II. Cilia and flagella III. Chromosome IV. Mitochondria
Match List-I with List-II. List-I A. F1 Particles B. Histones C. Axoneme D. Cisternae List-II I. Chromosomes II. Cilia III. Golgi apparatus IV. Mitochondria
Diuresis is prevented by:
Which one of the following is an example of polygenic inheritance?
Given below are two statements. One is labelled as Assertion (A) and the other is labelled as Reason (R): Assertion (A): A flower is defined as a modified shoot wherein the shoot apical meristem changes to floral meristem. Reason (R): Internode of the shoot gets condensed to produce different floral appendages laterally at successive nodes instead of leaves. In the light of the above statements, choose the correct answer from the options given below:
Which of the following statement is true for bryophyta:
Read the following statements and choose the correct statement:
How many ATP and NADPH2 are required for the synthesis of one molecule of glucose during Calvin cycle?
An electric dipole is placed as shown in the figure. The electric potential (in 10² V) at the point P due to the dipole is: (ε₀ = permittivity of free space and 1/4πε₀ = k)