MCQ
A ray passes through a prism of angle $60^o$ in minimum deviation position and suffers a deviation of $30^o $. What is the angle of incidence on the prism......$^o$
- A$30$
- ✓$45$
- C$60$
- D$90$
✓
Answer
Correct option: B.
$45$
b
(b) $i = \frac{{A + {\delta _m}}}{2}$$ = \frac{{60^\circ + 30^\circ }}{2} = 45^\circ $
(b) $i = \frac{{A + {\delta _m}}}{2}$$ = \frac{{60^\circ + 30^\circ }}{2} = 45^\circ $
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
An inductor, a resistor and a capacitor are joined in series with an $AC$ source. As the frequency of the source is slightly increased from a very low value, the reactance of the.
→Isotopes are atoms having
When the particle and its anti$-$particle unite, the result is:
→A photocell employs photoelectric effect to convert
If $f_a$ and $f_f$ represent the carrier wave frequencies for amplitude and frequency modulations respectively, then
→An oscillator is nothing but an amplifier with
A current of 10A is passing through a long wire which has semicircular loop of the radius 20cm as shown in the figure. Magnetic field produced at the centre of the loop is
The angle of minimum deviation measured with a prism is $30^o $ and the angle of prism is $60^o $. The refractive index of prism material is
→In the circuit shown in figure, the ratio of charges on $5\ \mu F$ and $4\ \mu F$ capacitor is :
→In order to increase the sensitivity of a moving coil galvanometer, one should decrease