A plane mirror produces an image that is:
- AReal, inverted and larger than the object.
- BReal, upright and same size as the object.
- CReal upright and smaller than the object.
- DVirtual, upright and the same size of the object.
A plane mirror produces an image that is:
Explanation:
So a plane mirror always forms a virtual, upright and same sized image.

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$\frac{1}{2}\text{mgR}$
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Six equal resistances are connected between points P, Q and R as shown in the figure. Then the net resistance will be maximum between
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(a) P and Q |
(b) Q and R |
(c) P and R |
(d) Any two points |
Consider telecommunication through optical fibres. Which of the following statements is not true
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(a) Optical fibres may have homogeneous core with a suitable cladding |
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(b) Optical fibres can be of graded refractive index |
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(c) Optical fibres are subject to electromagnetic interference from outside |
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(d) Optical fibres have extremely low transmission loss |
Characteristic X-rays are produced due to
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(a) Transfer of momentum in collision of electrons with target atoms |
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(b) Transition of electrons from higher to lower electronic orbits in an atom |
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(c) Heating of the target |
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(d) Transfer of energy in collision of electrons with atoms in the target |
Assertion : Short wave bands are used for transmission of radio waves to a large distance.
Reason : Short waves are reflected by ionosphere
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(a) If both assertion and reason are true and the reason is the correct explanation of the assertion. |
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(b) If both assertion and reason are true but reason is not the correct explanation of the assertion. |
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(c) If assertion is true but reason is false. |
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(d) If the assertion and reason both are false. |