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Q. If light enters an equilateral glass prism (n = 1.40) with an angle of incidence of 45 degree, what is the angle of refraction as the beam emerges from the prism? Note that an equilateral triangle has three 60° angles.
1. 67.2°
2. 52.4°
3. 43.5°
4. 60°
Ans: 2

Q. When a beam of light (wavelength = 450 nm),originally travelling in air, enters a piece of glass (index of refraction 1/50), what will happen to its frequency?
1. It gets reduced to 1/3 of its original value
2. It increases by a factor of 1.50
3. It gets unaffected
4. It gets increased by a factor of 3
Ans: 3

Q. When a current carrying conductor is placed above a magnetic needle, what is the maximum deflection that can be produced?
1. 45°
2. 90°
3. 180°
4. 360°
Ans: 2

Q. If a charge of 15.0 C flows through a wire and the amount of electrical energy converted into heat is 1.5 J, what is the potential difference across the ends of the wire?
1. 0.5 V
2. 2.65 V
3. 0.1 V
4. 10 V
Ans: 3

Q. What is the name of the mode of reproduction by which the offspring arises from a single parent, and inherits the genes of that parent only?
1. Sexual
2. Asexual
3. Vegetative
4. Mono sexual
Ans: 2

Q. Who discovered the fact that – “An electric current produces a circular magnetic field as it flows through a wire”?
1. Oersted
2. Faraday
3. Fleming
4. Coulomb
Ans: 1

Q. A ray of light hits a plane mirror at 60° from the normal. What is the angle between the reflected ray and the surface of the mirror?
1. 30° from normal
2. 90° from mirror
3. 90° from normal
4. 30° from mirror
Ans: 4

Q. If the potential difference across an electric bulb is 4.6 V and the current flowing through it is 0.25A, what is the resistance of the bulb?
1. 1.15 ohm
2. 18.4 ohm
3. 0.1 ohm
4. 0.625 ohm
Ans: 2

Q. What is the directional growth movement of a plant part in response to the touch of an object called?
1. Thigmotropism
2. Geotropism
3. Chemotropism
4. Phototropism
Ans: 1

Q. Evolutionary principles have been used for classification of animals and plants. According to this, HUMANS come under which class?
1. Mammalia
2. Arthropoda
3. Aves
4. Amphibian
Ans: 1