RGUKT Daily Test-8

Graph of a quadratic polynomial can meet ‘x-axis’ at __ point/s.
a. 1
b. 2
c. 3
d. 1 or 2

A polynomial of degree one is called ____ polynomial.
a. Constant
b. Linear
c. Quadratic
d. Cubical

Which of the following is true?
a. Divisor = (Dividend x Quotient) + Remainder
b. Dividend = (Divisor x Quotient ) + Remainder
c. Quotient = (Dividend x Divisor) + Remainder
d. None

If one zero of a quadratic polynomial (kx2 + 3x + k) is 2, then the value of k is
a. 5/6
b. – & 5/6
c. 6/5
d. – & 6/5

The graph of a linear polynomial is
a. Straight Line
b. Parabola
c. Ellipse
d. Square

The number of zeroes that a quadratic polynomial contain at most are
a. 1
b. 4
c. 3
d. 2

Assertion: (2 – √3) is one zero of the quadratic polynomial then other zero will be (2 + √3)
Reason: Irrational zeros (roots) always occurs in pairs.
a. Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).
b. Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).
c. Assertion (A) is true but reason (R) is false.
d. Assertion (A) is false but reason (R) is true.

Assertion: If one zero of poly-nominal p(x) = (k2 + 4)x2 + 13x + 4k is reciprocal of other, then k = 2
Reason: If (x – α) is a factor of p(x), then p(α) = 0 i.e. α is a zero of p(x).
a. Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).
b. Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).
c. Assertion (A) is true but reason (R) is false.
d. Assertion (A) is false but reason (R) is true

Assertion: p(x) = 14×3 – 2×2 + 8×4 + 7x – 8 is a polynomial of degree 3.
Reason: The highest power of x in the polynomial p(x) is the degree of the polynomial.
a. Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).
b. Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).
c. Assertion (A) is true but reason (R) is false.
d. Assertion (A) is false but reason (R) is true

Assertion: If both zeros of the quadratic polynomial x2 – 2kx + 2 are equal in magnitude but opposite in sign then value of k is ½.
Reason: Sum of zeros of a quadratic polynomial ax2 + bx + c is -b/a
a. Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).
b. Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).
c. Assertion (A) is true but reason (R) is false.
d. Assertion (A) is false but reason (R) is true

The size of an object is perceived by an eye depends primarily on?
a. Actual size of object
b. Distance of the object from the eye
c. Aperture of pupil
d. Size of image formed on retina

When objects at different distances are seen by eye, which of the following remain constant?
a. Focal length of lens
b. Object distance from eye lens
c. The radii of curvature
d. Image distance of eye lens

During refraction, ____________will not change.
a. Wave length
b. Frequency
c. Speed of light
d. All the above

The wave lengths corresponding to violet, yellow, red lights are ______________
a. λv >λy > λr
b. λv < λy < λr c. λy < λv < λr d. λy < λr < λv

The muscle iris control the _____________
a. Optic nerve
b. Opening of pupil
c. Focal length of eye lens
d. Shape of crystalline lens

When the focal length of lens is 50cm, then power of lenses is _________
a. 1D
b. 2 D
c. 0.25 D
d. 0.5 D

Natural example of dispersion of light is?
a. Scattering
b. Blue colour of sky
c. Rainbow
d. none of these

The maximum and minimum focal lengths of eye lens are_____________
a. 24 cm / 22.7 cm
b. 2.5 cm / 2.27 cm
c. 25 mm/22.7 mm
d. B and C

The process of re-emission of absorbed light in all directions with different intensities by the atom or molecule is called______________
a. Scattering of light
b. dispersion of light
c. reflection of light
d. refraction of light

The colour which has least wavelength in visible spectrum VIBGYOR?
a. Violet
b. Red
c. Green
d. Blue

Which prevent the backward flow of blood into the ventricles?
a. Aorta
b. Vein
c. Valves
d. All

Large artery
a. Coronary artery
b. Pulmonary artery
c. Aorta
d. None of these

The normal reading for blood pressure in humans
a. 120/80 mm of Hg
b. 140/80 mm of Hg
c. 120/90 mm of Hg
d. 130/80 mm of Hg

Sieve tubes and companian cells can be seen in
a. Leaf
b. Bark
c. Xylem
d. Phloem

Transpiration in plants takes place through
a. Stem
b. Root
c. Stomata
d. All of these

Xylem and phloem are present in
a. Cambium
b. Pericycle
c. Endodermis
d. Vascular bundles

The whole process of cardiac cycle is approximately completed in
a. 0.8 sec
b. 0.9 sec
c. 0.10 sec
d. 0.11 sec

Where did an aphid pierces its proboscis to get plant juice?
a. Xyem
b. Phloem
c. Cambium
d. Vascular bundle

Heart attacks means
a. Coronary artery gets blocked
b. Pulmonary vein gets blocked
c. Coronary vein gets blocked
d. Pulmonary artery gets blocked

The blood pressure during walking and running is
a. Normal
b. Less than normal
c. More than normal
d. None