A Simple Harmonic Motion Is Represented By X(t) = sin2 Omega T – 2 Cos2 Omega T.What Is The Angular Frequency Of Oscillation?
x = sin2 ωt – 2 cos2 ωt = 1 – 3 cos2 ωt = \(\begin{array}{l} 1 – 3 (\frac{1 + cos 2... View Article
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Two Rods Of Equal Mass M And Length L Lie Along The X-axis And Y Axis With Their Centres Origin. What Is The Moment Of Inertia Of Both About The Line X=Y?
Sol: Moment of inertial of a rod of about an axis passing through centre and perpendicular to a length: \(\begin{array}{l}I... View Article
If The Overbridge Is Concave Instead Of Being Convex. What Will Be The Thrust On The Road At Lowest Position?
Let the normal reaction (thrust) applied by the bridge be N. Circular motion equation : mar= N − mg Therefore,... View Article
State Three Functions Of The Placenta.
Placenta refers to the temporary vascular organ found in mammals, which attaches the fetus to the mother’s uterus during pregnancy.... View Article
Through Which Of The Following Plants Do The Maximum Transpiration Occurs? (A) Bryophytes. (B) Mesophytes. (C) Thallophytes. (D) Pteridophytes.
The correct answer is (B) Mesophytes. Most of the transpiration occurs in mesophytic plants. In these plants, transpiration is the... View Article
The Sugar Solution Is A Homogeneous Mixture Whereas Oil And Water Is A Heterogeneous Mixture Justify.
A homogeneous mixture consists of a single phase. The sugar solution is a homogeneous mixture because sugar dissolves and is... View Article
In Animal Cells, Protein Synthesis Occurs In (A) Cytoplasm. (B) Nucleolus As Well As Cytoplasm. (C) Cytoplasm As Well As Mitochondria. (D) Ribosomes Attached To The Nuclear Envelope.
The correct answer is (C) Cytoplasm As Well As Mitochondria. In animal cells, protein synthesis occurs in mitochondria, chloroplasts, cytoplasm... View Article
Many Times We Experience Dryness In The Mouth. Explain The Condition And Reasons For The Same.
Dry mouth is a condition that happens when salivary glands in our mouth do not produce enough saliva. This results... View Article
Lichens Are Sensitive To_______. (A) Air Pollution. (B) Noise Pollution. (C) Water Polluntion. (D) Nuclear Polluntion.
The correct answer is (A) Air Pollution. Lichens are the symbiotic associations between algae and fungi. These absorb the mineral... View Article
State Three Ways In Which The Strength Of An Electromagnet Can Be Increased
The three ways by which the strength of an electromagnet can be increased are: By increasing the current flowing in... View Article
State, Whether The Following Statements Are True Or False A Ray, Has No Endpoint.
The given statement is false. A ray starts from a point and goes to infinity. Therefore, ray has one endpoint.... View Article
Determine Which Of The Following Pairs Of Angles Are Coterminal. (A) 330,− 60 degrees. (B) 210,− 150 degrees. (C) 405,− 675 degrees. (D) 1230,− 930 degrees.
The correct answer is (B) 210° − 150° Explore more such questions and answers at BYJU’S.
Without Actual Division Prove That X4 + 2X3 + 2X2 + 2X – 3 Is Exactly Divisible By X2 + 2X – 3.
Given: \(\begin{array}{l}x^{4} + 2x^{3} – 2x^{2} – 3\end{array} \) is exactly divisible by \(\begin{array}{l}x^{2} + 2x – 3\end{array} \) \(\begin{array}{l}x^{2}... View Article
Cancer Cells Are More Easily Damaged By Radiation Than Normal Cells Because They _____. (A) Non-dividing.(B) Starved Of Nutrition. (C) Different In Structure. (D) Undergo Rapid Division.
The correct answer is (D) Undergo Rapid Division. Radiation therapy is most harmful to fast-growing cells and it prevents cancer... View Article
A Hollow Sphere In Which A Circus Motorcyclist Performs His Stunts, Has An Inner Diameter Of 7m. Find The Area Available To The Motorcyclist For Riding.
Sol: The inner diameter of the hollow sphere, 2r = 7m Available area to the motorcyclist for riding = Inner... View Article
What Are The Magnetic Elements Of The Earth’s Magnetic Field?
The magnetic elements of the earth’s magnetic field are: Magnetic declination (q) Magnetic inclination (d) Horizontal component (BH) Explore more... View Article
Which Of The Following Is Not Viviparous? (A) Whale. (B) Elephant. (C) Platypus. (D) Flying Fox (Bat).
The correct answer is (C) Platypus. Animals that give birth to offspring are called viviparous. All mammals are viviparous except... View Article
A Particle Of Mass 2 Kg Is On A Smooth Horizontal Table And Moves In A Circular Path Of Radius 0.6m. The Height Of The Table From The Ground Is 0.8m If The Angular Speed Of The Particle Is 12rads −1, The Magnitude Of Its Angular Momentum About A Point On The Ground Right Under The Centre Of The Circle Is:
Sol Given: Mass = 2 kg radius = 0.6 m \(\begin{array}{l}w=12rad^{-1}\end{array} \) Distance (perpendicular) between point and mass, = \(\begin{array}{l}r_{\lambda... View Article
Which Of The Following Was The New Religion Started By Akbar? (A) Sufism. (B) Sulh-i-kul. (C) Din-i-ilahi. (D) Khan-e-khana.
The correct answer is (C) Din-i-ilahi. Explore more such questions and answers at BYJU’S.
Differentiate Between Solids Liquids And Gases With Respect To Compressibility
In respect to compressibility, here is the difference between solids, liquids and gases: Solids Liquids Gases The particles are tightly... View Article
